The simple riddle that 50% of Harvard students get wrong

Sources for scientific journals are provided below. New videos come out every Thursday so subscribe for more videos.
Visit my Facebook page for more bite sized tips and psychology information
/ bitesizepsych
Also, if you like the music behind it, you should check out the musician behind it. This is his latest project:
• Video
Sources
Cognitive reflection test
emilkirkegaard....
Cognitive reflection test and cognitive biases
www.keithstanov...
Font in cognitive reflection test
pages.stern.nyu...
Fonts in school
web.princeton....
Fonts and cognitive strain
rady.ucsd.edu/f...

[@srijan3575]

Why did you have to say "Most Harvard students don't get this right..." Because now there are a bunch of 9 year olds thinking that they're gods and mathematical geniuses..

[@Jonathan-tl2qw]

Srijan 😂

[@cameronguy3964]

Srijan xD

[@lightningprowess6031]

Lol

[@ichangedmynamebutnotmypict8424]

Srijan I've seen that question too many times to count in 3rd grade (inside and outside of school) so yeah.

[@deathgripsnightcore8121]

Shane Hall I am 13 :)

[@sabbirahmedhimel4527]

i failed ... does that mean I will get into harvard?

[@subtlethingsinlife]

haha , probably you are already in Harvard

[@maddhatter6938]

I got it right! I first represented the problem as two equations. I then used the elimination method for solving simultaneous equations and got $0.05 (5c). Or, you know, common logic.

[@BigDBrian]

That's not how probability works :P

[@sabbirahmedhimel4527]

But thats a positive correlation and based on the claim that 50% of harv grads gosh thats huge stupid claim :P !

[@CRC489]

The third questions answer is 47 days

[@onlyicedgarrett7791]

So, long story short, they got cocky and answered the question too fast without thinking about it.

[@onlyicedgarrett7791]

Mike J. I watched the video from beginning to end, and my analogy is an easy way to explain the concept of System 1. They answered the question like a reflex rather than problem solving through it, because they thought it was easy. Plus, it explains the title of "50% of Harvard students missing the question", which was my objective with that comment. I've had my fair share of test questions I've missed because I didn't think about it hard enough, thinking that it was a no brainer. I'm not saying they're a bunch of idiots. However, they got the question wrong, saying they made the correct play isn't right either. Breezing through the questions, which is instinctive in this instance, was the wrong choice.

[@onlyicedgarrett7791]

Mike J. If that's the case, well, I guess anyone would've gotten it wrong. It's pretty hard to answer those when you're in System 1. I guess that explains why professional test takers would only have a 50% win rate against those questions. They were forced into System 1.

[@Emteon]

Garrett Seno It's not being cock at all. It's acting in impulse.

[@mavi1k481]

Garrett Seno they probably just answered quick because it seems like such a simple question

[@KIMFPawp]

Garrett Seno No, that's not it. It shows how quick our brains are to answer seemingly simple questions. Almost without choice

[@bensonzhang7331]

Ok, I got the question right. Where's my acceptance letter for Harvard?

[@Kino-Imsureq]

*HARVARD BIRTH CERTIFICATE* Name of Parents: *who in the world are they*, Name of Child: *DRAVRAH* REJECTED BY: *Garbage*

[@abduldiallo6650]

It's not that easy!

[@peachinne5345]

Abdul Diallo then your a doo-doo head.

[@abduldiallo6650]

xXThe Kawaii Cute Nekø Girl! Lewd Rper!Xx, Yh most of the time but what I was trying to say here is that it's not easy to get I to Harvard as u have to get at least half to be able to get in to it (or if you're really lucky and have get close to half) and it's out of 1600 (the new one). I got the first (at the beginning) & second question correct the third one though I didn't😂😂

[@abduldiallo6650]

xXThe Kawaii Cute Nekø Girl! Lewd Rper!Xx, I thank u for not calling me any names as when someone gets something wrong in a place like Facebook or KZbin they start assuming and start calling u names so again I thank u☺️☺️

[@evathegrand]

so now I'm smarter than half of the people in Harvard?

[@GeneralWarned]

Well, define "smarter". Sure you could say that.

[@evathegrand]

smarter as in heavily concentrating on every question I get. This is why logical thinking is hard for me

[@ekathe85]

Not necessarily. System 1 thinking exists for a reason, time is also a factor in everyday life. You can't count the change at the store as if you're in an algebra exam. And naturally, we'll guess wrong when faced with problems that seem to be easy to solve at first glance.

[@benjamingillam1218]

Being dumber might actually help on this test. Seeing the bat and ball question could feel so hard for you, that you automatically switch to type 2 thinking, which is more meticulous and will get you the correct answer. The only reason these guys missed any of them was because they were tricked (I assume everyone who goes to Harvard had to pass Calculus in high school).

[@evathegrand]

Benjamin Gillam that's true, but you still need to be smart enough to be able to answer it. I just concentrated because it felt way to easy a question to make a video about

[@ReneePrower]

For those who are second-guessing themselves: 2) Five minutes. 3) 47 days.

[@Javinkal]

just what I thought! thanks :)

[@TheDeqiro]

That's what I got also.

[@Illuminatiman44]

I got 47 days but why 5 minutes

[@fcnator]

because in 100machines there are 20 groups of 5 which will make 5 widgets each in 5 minutes. 20 groups * 5 = 100

[@antobella2]

+TheOblivionisdoom adding more machines doesn't accelerate them. they still make 1 widget in five minutes. so if you have 100 machines they'll make 100 widgets, one for each, in five minutes.

[@ash64181]

I got all of them right, can I go harvard now

[@sel5595]

Ash no one is stopping u to go to 'havard'

[@Kingwil497]

Lol

[@Kingwil497]

Sure m8... you can go to "havard" anytime you want.

[@koenvandalen4035]

If you ever find 'havard', chase your dreams!

[@koenvandalen4035]

If you ever find 'havard', chase your dreams!

[@Alchemist1330]

The clickbait title that over 50% will click on.

[@Darkfreestyler]

Alchemist1330, kind of. He could have thought about a better title without it being click bait. But hey, it at least isn't useless stuff like almost any click bait video.

[@amirelangouri75]

I know it is so clickbait and fake anyone knows that

[@jaerompamintuan9604]

the first question was stupid because both answers are right.

[@PubuduDodangoda]

@@jaerompamintuan9604 no

[@shanious4804]

5 minutes. 47 days

[@erinberger4218]

That's the answer I claim as well. Are we correct? I think so!

[@daviddechamplain5718]

We are in agreement and correct.

[@Ulindria]

wouldn't it be one minute?

[@JD-qq4bm]

1 machine would make 1 widget in 5 minutes, it takes 5 minutes for a machine to make a widget regardless of how many machines there are or widgets being made.

[@dorusie5]

@Shera If it reaches the entire lake in 48 days, and it doubles in size everyday, it would have reached half the lake a day earlier, so 47 days.

[@Christian_Prepper]

ANSWERS: If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets? 5 MINUTES In a lake there is a patch of lily pads. Every day, the patch doubles in size. If it takes 48 days for the patch to cover the entire lake, how long would it take to cover half the lake? 47 DAYS

[@danielbaker7759]

Wow. Clever. Well Done (no sarcasm inteneded (that just makes it sounds like im being sarcastic (im really not)))

[@Edgard422]

We all know you are

[@danielbaker7759]

I seriously not. I'm thick af and was not expecting them awnsers. I was impressed.

[@LeandroR99]

Do you agree that the first one could be misleading? If you say that 5 machines takes 5 minutes to make 5 widgets, you can interpret that each machine takes 5 minutes individually and they work at the same time, OR that 5 machines take 1 minute each, operating one by one and resulting in 5 minutes of work. So the answer could be: a) 100 machines taking 5 minutes to make 100 widgets b) 100 machines taking 100 minutes to make 100 widgets

[@elizabethgraves4318]

20 min, 47 days

[@raysson1]

The reason students get simple tests like these wrong is because they are drilled to be fast and not to be thorough. Often they get confronted with exams in their school life which they can only finish if they solve the questions fast and don't take time to think about the problem.

[@EduardoCruz-ik2ik]

i completely agree witu you and that is the priblem with many high grade schools or schools that teach k-12 is that they time you during test in college you have all the time in the world to answer the questions

[@HermosoEcuador]

#21

[@Optimus6128]

Exactly. I am a slow thinker and always hated exams. It's thinking under stress. And some people will say "yeah, because in the real world you might have to think fast and correct". I don't like this. Some of the best solutions are not instathinking but careful out of the box thinking.

[@taseenkhan5204]

Math tests are intentionally not designed this way.

[@mikee758]

I don't like that you even call yourself a 'slow thinker' you are a 'discerner' lol 😊

[@rainatl5y]

Me: *looks at title* "doesn't that just mean the other half get it right"

[@wesley1759]

Big Numbers = Big Views 99.99999999% Can't see this comment

[@junkmail4613]

Raina Pink 1 month ago 'Me: looks at title "doesn't that just mean the other half get it right"' No it doesn't. That's the useless, no value added answer, that SERVES NO PURPOSE, other than to make a lame attempt to get a laugh. What it really means is that half the Harvard students are NOT SMARTER THAN A SIXTH GRADER. I would then say, that this sounds like an AMERICAN HOMELAND NATIONAL SECURITY CRISIS. Suggesting Trump aught to climb up on the stick, before it comes out his mouth!!! ? What do you think?

[@rainatl5y]

Junk Mail 😂 I was just asking...

[@junkmail4613]

Raina Pink 2 hours ago "Junk Mail 😂 I was just asking... " At first I thought you said you were joking.... but then you said you were serious..... in which case I'm forced to say, " First thing tomorrow morning, you run down to school, and the very first teacher you see, you fall down on your knees and you implore them, to please please tutor you, because you've squandered every single opportunity your teachers have provided you all the way up to first or second grade or what ever maximum grade you've bluffed your way thru, and don't quit until they agree to help you, and you go ahead to EVERY teacher you see, and do the same to them. Then you go home, back to your parents and plead and apologize to them for being an absolute wastrel of every golden opportunity they gave you and you beg THEIR forgiveness, and you keep doing this procedure up every hour of every day until you turn 18 when they kick you the hell out-of-there and you have to start earning your own board and keep. Then you beg your way into a job, and every day you beg, and apologize, and ask forgiveness of your boss, and his boss, and his boss and do this 6 days and 23 hours, and the one hour you're not doing that to your bosses, you do it to you pastor or priest. And you'll be doing this for the rest of your life, apologizing "Because you were just asking, instead of being intelligent and thinking for yourself" There ain't no sanctuary no place to hide for you except a cardboard box under the bridge. And of course on the Trump White House Cabinet, as an adviser and a door knob. where everyone wants to give you a crank. And I wasn't joking, I was DEAD SERIOUS. DON'T TRIGGER ME !!! don't ask the question if you don't want the answer. Change the question !!!

[@charliedelfino2102]

Junk Mail dude, calm down. Your last comment was hardly necessary. All they did was make a remark- a correct remark whether it was useless or not.

[@TheDjordjeSS]

Dislike because you lied that 50% of Harvard students get wrong. Nobody who knows maths can't get it wrong

[@BiteSizePsych]

+TheDjordjeSS Take a look at the study for yourself. It's in the description.

[@TheDjordjeSS]

+Bite Size Psych I did. It says 20%.

[@jonathanlimm7221]

+TheDjordjeSS If you're looking at table one, the first percentage for Harvard University - that's the percentage that got all three problems wrong.

[@nickportokallidis]

+TheDjordjeSS I think a better title would be "only 1/5 of the Harvard Choir students got all 3 questions right" , Cognitive Reflection and Decision Making, Shane Frederick: p29, Table 1

[@a.lampman2165]

+TheDjordjeSS "Nobody who knows maths can't get it wrong" Was that intentional?

[@Composer_Piggy]

How are you supposed to know that the ball is 5 cents?

[@tysonhansen805]

Magnificent Moonlight04 ur dumb

[@UrasSomer]

Magnificent Moonlight04 You need to know how to add and subtract

[@Composer_Piggy]

matt carson but why can't the ball be 10 cents

[@Composer_Piggy]

Tyson Hansen I'm not dumb, I just don't know why the all isn't ten cents

[@blazingbojo4932]

Magnificent Moonlight04 if the ball was 10 cents then the bat being a dollar more than the ball would add up to $1.10, and if you add the $1.10 bat with the already $.10 cent ball, you would get $1.20 in total

[@GameSmith]

I think the problem with the world is that most people think about politics using system 1.

[@Dempsey22000]

GameSmith I agree the system one goes off of the social norm mainly instead of putting some thought into it and they see someone who is doing better than them or is in a so higher place in life and just automatically assume that person is right

[@TheNBAFreak]

GameSmith I think you are absolutely right. Before watching this, I was, too.

[@alexku8452]

Samuel Dempsey I also just realized the full purpose behind the choice of font type and size in yellow press papers headlines

[@jesusfingers8961]

That's what partisan politics induces and it makes people go against their better interests along party lines.

[@tanvi_1840]

I think we live in the same world bro....

[@jadecastillo8949]

Damn, I got it right, but after a lot of time haha... my first choice was Hogwarts anyway.

[@jaso1697]

Jade Castillo Me too, but I would probably be in Hufflepuff.. not that it is a bad thing 😂

[@erudite5694]

Sameee. Gryffindor ❤️

[@tritonist2737]

Jade Castillo Me too but I’ve still haven’t gotten my letter yet.

[@random20000]

I would be in slytherin tbh , i would do anything to get my dreams just like other slytherins :)

[@alexk6126]

You gave us literally no time to think about our answer :(

[@unhygenicweeaboo933]

pause :p

[@alexk6126]

I didn't know the answer was gonna happen lol wasn't ready

[@marlan__]

Yea, I didn't expect him to spoil it so fast. I paused as soon as he started saying "well that's your intuition" but it was already too late, it was already spoiled. I got the answer but I feel like I cheated by him telling me my intuition could be wrong.

[@jettlaxholly]

It shouldn't take you more than 1 second

[@alexk6126]

jett lax unless you were waiting to see what the end of the question would be, to see if there were anymore variables, before you make a conclusion

[@TheRealBoomslice]

Coincidentally there is also a bias in intelligence after watching videos such as this. Because people are more likely to critically think about their answers after just being told that most people don't.

[@bencarroll8203]

Well... Obviously. If I say WARNING THIS QUESTION WILL MISLEAD YOU before asking you a question of cource you're going to think carefully about it

[@Dazaer]

According to another of his videos, if you're told "most people don't critically think, but you should" people won't critically think. The correct way to say it would be "most people critically think to answer this question correctly, so you should too"

[@DavidVaughan00]

+Phalax Just because everybody finds it obvious doesn't mean that everybody would have actually *noticed* it, had it not been pointed out. Many obvious facts are still worth stating out loud.

[@Writermist]

My brain switched to system 2 because they said most people get this wrong. :) question 2 - 5 minutes question 3 - 47

[@potatoeshavefeelingstoo8972]

Writermist can u tell me how u got it (im dumb)

[@Writermist]

Question 2 says it takes 5 machines 5 minutes to make 5 widgets. So EACH of those 5 machines, are making their ONE widget. 5 minutes is how long it takes for a widget to get made. ONE machine making ONE widgets takes 5 minutes. They just happen to have 5 machines at the same time. So if you have 100 machines. It's still gonna take 5 minutes. Question 3 Every day the patch DOUBLED. 48 days the whole thing is covered. that means on day 47 it was half way covered. (think half of a pizza) next day, (day 48) it doubled. (a whole pizza) :D

[@deeptochatterjee532]

Potatoes Have Feelings Too If it takes x minutes for 5 machines to make 5 widgets, then you can multiply the 5 by 20 to increase the product to 100 widgets without changing the time. So it will still take x minutes which in this case is 5 On the 48th day the whole lake is engulfed, and the patch doubles everyday, then we can reverse the process and say the day before the patch was half as large. The day before was the 47th day and half as large as the entire lake is half the lake. So it must be 47 days

[@secretdt704]

Where are the other 2 questions?

[@Writermist]

at the end of the video

[@saltyboi9317]

Guys simple algebra. X + (X+1)= 1.10 2X + 1= 1.10 2x=0.10 x= 0.05

[@EternalEmpr3ss]

I dont fucking know algebra

[@optimalgg3383]

Cool

[@alanconde1974]

That’s wrong though

[@oliviafasnacht]

You distributed wrong

[@Danification9]

Olivia Johnson He didn’t distribute; he wasn’t multiplying. The brackets were simply removed because they had no effect on the equation. X + X + 1 = 2X + 1

[@j-r-m7775]

These questions were easy. If I were given these by someone, who I knew was analyzing me, I would know to slow down and easily get them right. The only way I could see myself getting these wrong is if they were buried in a test of simple questions. If all the other questions were simple, straight-forward, questions with obvious first-thought answers, and I wasn't looking for a potential "trickish" question, I might be fooled.

[@nickstrauch2132]

The people being tested had around 1 minute per question

[@j-r-m7775]

Nick James I don't think time is really that much of a factor. Those aren't problems that have to be worked out with multiple steps. It just comes down to if you are "fooled" by them or not.

[@nickstrauch2132]

+James Reese I completely agree, the only reason I think time is a factor is because the test taker may have been rushed.

[@j-r-m7775]

+Nick James yeah that could've been a factor

[@markcarls1896]

+James Reese Pay your debts

[@volcanosauce00]

Ball: 5 cents Bat: $1.05 Super easy question

[@volcanosauce00]

Answer to #2: 5 minutes Answer to #3: 47 days

[@humptyDumptyHadAGreatFall]

yes they are but if you are doing a simple test and you dont have much time, as usually in higher education you dont get lot of time in tests you simply fast read it and fast answer the logical answer which is wrong.

[@RubberToeA]

garner montgomery it's actually 1 minute

[@Danification9]

^ It's 5 minutes.

[@kenny.bender]

garner montgomery god ur so cool

[@dodec8449]

I hate how all these people in the comments talk about people who got these questions wrong as "retarded", "morons" and "stupid". That is not the point of these kind of tests. If you see that question about the bat and the baseball, the first thing which will pop up in your head is "10 cents!". Then some people might think "Wait ... but what if I missed someting ... let's think it through .... " Let's be honest here ... who didn't thought immediately "10 cents!". I did and I eventually answered "5 cents", but if I'm honest: this is only because the title of this video already suggests it's about a trick question, so I was extra aware. If I didn't knew anything about the test and I had to answer it within a time limit, I think I would be one of those people that answerd "10 cents!". It's just how our brains work. Our brain has a bias towards lazy (but efficient!) solutions. Which is a good thing btw, because most of our daily tasks don't need very deep thinking. So I don't see it as shocking that 50% of Harvard students got this wrong. Seeing the world in black and white, a world of intelligent people and "morons", not being honest that everyone makes mistakes like this because that's just how are brains work ... that is REALLY stupid.

[@Untoldanimations]

Yeah but most non-stupid people would at least think about their answer before they comment it

[@dodec8449]

+Nate Wootton Really initially initially? I don't mean your "first answer", I mean the answer that popped up in your head a split second after you read the riddle. So this thought doesn't count: "Wait, this is not 10 cents of course, it's 5 cents", because then you obviously thought that it was 10 cents first.

[@theuncalledfor]

+Dodec84 The fucking idiots are the people who don't get it even after it's been explained to them.

[@okuno54]

+Dodec84 Yeah initially. I'm in a similar spot: when the video said "most people would say 10c", I was like "lol wut, that doesn't add up". Perhaps it was the presentation in the form of an equation, but I immediately filled in the second equation, realized I had two linear eqs in two variables, and it was just a matter of cranking out the algebra. I'm totally prepared to believe that some people won't go down the wrong track, especially since we're primed even from the video title that trick questions are about to ensue. That said, I'm kinda ashamed of how long it took me to put the equation together for question 2, and then only realizing after I had solved it that there's a neat little lateral move that can be done. Oh well, such is life.

[@toka1978]

+Ryan Harrington The Bat has to be at least 1$ so total 1.10$-1$ leaves 0.10$ to ensure the Bat is exactly 1$ more you need to split the 0.10$ into 2 equal parts making the Ball 0.05$ and the Bat 1.05$

[@victorfernandez4054]

I answered all of them correct, bring me my Harvard acceptance letter XD.

[@amirelangouri75]

This is fake tho

[@omarsabry9489]

correctly*

[@louisvictor3473]

@@omarsabry9489 No no, the answer he gave to each answer was just the word "correct".

[@casmartin790]

@@omarsabry9489 🤣🤣🤣🤣🤣🤣, brilliant!!

[@Alehan-gt4ec]

Same I’m waiting

[@IcepickL]

Implying that going to Harvard means you are intelligent.

[@loadingreadylover620]

It does...

[@IcepickL]

+LoadingReadyLover It means a recruiter thought you had particular attributes which they valued for one reason or another. It doesn't explicitly, or even implicitly imply intelligence.

[@ErickOberholtzer]

+Icepick L Going to an Ivy League school does imply intelligence, just as not going to college implies a lack of intelligence. It does not prove it however.

[@camelway]

+Icepick L Going Harvard implies your dad/mom is loaded with cash or use of affirmative action. Anything else is debatable.

[@IcepickL]

+I'll Tell Ya What Out of curiosity, did you apply to Harvard?

[@retro7328]

you mean 50% get right

[@manuelmoreno94]

you know that if 50% got it right still 50% that got it wrong

[@randomperson2078]

Manuel Moreno Obviously Boomfire 3 is an optimist.

[@kellyeaston2715]

HARVARD HERE I COME

[@quickeroats]

we're friends on fb

[@kuanchan1696]

I got it right in 8 seconds can I go to Harvard

[@kuanchan1696]

+Kuan Chan nvm I want to go to Yale

[@CalDia04]

+Kuan Chan I want to go to M.I.T. :P

[@kingcriggin5537]

Kelly Easton If I had money

[@anuragggsingh]

The answer for question 2 and 3 are 5 minutes and 47 days respectively.

[@altonmassson]

Anurag Singh yep

[@yairrossbach3139]

Well done!

[@ainombanerjee1188]

Why 47 days

[@ainombanerjee1188]

Oh I got it

[@ainombanerjee1188]

By the 47th day it already became the size of the half of the lake. one more day spent and done .

[@potatoeshavefeelingstoo8972]

Am I the only one who failed both last question, while the majority of people in the comments got it right..

[@sel5595]

Potatoes Have Feelings Too nope

[@letthatsinkin4913]

LaughingStock55 Well, I figured it out myself. The second one we did in math class like last week, while the third is a classic trick question.

[@katepearl7321]

i didn't get the second one but i got the third

[@thepresence3527]

qn 2 just gonna read carefully

[@bibbidi4616]

Potatoes Have Feelings Too No...your not....Fellow potato.

[@pastorofmuppets7654]

What data did you use to create the title? That "50"% of "Harvard" students get it wrong.

[@carterkucala4595]

PastorOfMuppets probably "Harvard" data

[@ok-zi1oo]

PastorOfMuppets check the sources in the description

[@charliesoltis7569]

PastorOfMuppets click bait

[@louiscyfer6944]

PastorOfMuppets harvard students averaged 1.48 correct answer out of the 3. thus 50% getting any of the 3 questions correct.

[@kevindevine2569]

Pastor, Pastor, Where's the sermon I've been after Pastor, Pastor, promised Gonzo flies!

[@keenanhoffman5594]

I hate system 2 thinking, it makes me repeat 15x20 in my head over and over again until I've wasted 10 minutes on the problem.

[@mikaylawall5120]

300

[@jek7177]

+Mikayla awww you're a smart one, aren't ya?

[@mikaylawall5120]

CyborgPlaysMC hehehehehehehehehe

[@insertnamehere8730]

20x5 and 20x10

[@raven6475]

ikr

[@sorenkair]

Ok people, no need to brag about figuring out the right answer. These questions aren't inherently difficult at all. If you were just handed the quiz during your interview to fill it out like a questionnaire, you would be a lot more likely to get them wrong rather than if you were told beforehand that more than 50% of Oxford students got it wrong.

[@stutir.5242]

Sorenkair yeah....I was thinking the same 😕 that's why I'm not convinced

[@33LB]

actually, no. it's not a particularly hard question.

[@Northflowo]

That's the point of the video. It's not difficult and the fact that it doesn't look so difficult either is what makes people get it wrong after all.

[@derekzhang4364]

shutup

[@themaritimer1022]

2. Five minutes 3. 47 days Anyone else get that?

[@wesjohnson6833]

+Canadian King Thats what i get, too.

[@disruptivebunny6760]

Got'em

[@regretnothing2407]

Yeah I got that too

[@guidoinsunglasses6385]

Yes it was pretty easy

[@teriyakichicken1848]

Actually it's 300 minutes because it takes 5 machines 1 minute to make 1 widget. So, it'll take 100 machines (20x the productivity, 60/20) 3 seconds to make 1 widget. 3*100 is 300 seconds. Fuck, I just realized what I did in my own comment. Maybe I used too much cognitive strain that I didn't realize how ridiculous 300 minutes is lol.

[@tinopaskar7819]

1:45 chemestri doesnt give a fuck.

[@tinopaskar7819]

sorry for grqmar

[@Zminchu]

Grammar was spot on, spelling kind of shit the bed, but grammar's A1.

[@jakeb4148]

+Zminchu Apart from the missing apostrophe

[@joshnorth4761]

But if it's a missing character is that spelling or grammar?

[@cheesehead75005]

because you already in system 2. im a chemical engernering student and you simple awnsers will not do the trick XD

[@eferrari96]

so half of Harvard students aren't just good at maths?

[@Felixr2]

No, they just think too easy of seemingly easy questions.

[@SkyReviewsNet]

moncool17Gaming found the Harvard student that got it wrong

[@felipe74476]

I mean that question has a pretty straigh foward answer, all you have to do is 1+x +x= 1.10 so 2x=0.10 which will show you that x=0.05

[@felipe74476]

+moncool17Gaming allright im gonna explain it easier for you, you have that the bat and the ball are 1.10. You want to find the value of the ball which will be x. You already know that the bat is 1 more than the ball so it is 1+x. This gives you that 1+x(the bat)+ x(the ball) is 1.10. So 2x = 1.10 - 1 So 2x =0.10 So x= 0.05

[@felipe74476]

+moncool17Gaming ill just asume that you haven't finished grade school

[@friedwater6519]

1:46 *notice how chemistry actually falls back a bit*

[@dhcarrot1195]

AceofApples lol ikr

[@Snobb_Number]

I hate it when people like this guy treats those who are academically successful as logical masterminds, only to bait viewers. Knowledge in chemistry, linguistics, etc. are not intertwined with logical thinking abilities.

[@arsenalfanrichi]

Snobb But it is a common preconception. It is beneficial that people realize that people who are academically exceptional are still less intelligent in other areas than those who are unexceptional academically.

[@myak37]

Snobb I can see u being unemployed

[@mirolinks]

swagnemite says the kid with pewdiepie's old logo and says "u" instead of "you". Not to mention your username is "swagnemite"

[@peytonmanning8930]

Miguel Rocha “You” sir, deserve a win

[@Cashashtray7]

Snobb Yeah you are write donkey kong

[@r.pizzamonkey7379]

The answer to the final questions 2: 5 minutes 3: 47 days EDIT: 3: 47 days and 1 day

[@dloverise]

+R. pizzamonkey yey…I got it too!

[@jarodbassett8533]

+R. pizzamonkey 3 is fucking 1 day ...

[@dokterew]

+Jarod Bassett It takes one day to cover the whole lake from 1/2 covered. It would take 47 days to cover 1/2.

[@DreadKyller]

+Jarod Bassett Except it's not. think about it for a moment. Each day it doubles. so from day 4 to day 5 it doulbes in size. This means that from day 5 to day 4 it reduces in size by half. If it takes 48 days to cover the entire lake, it takes one less day to cover half of it. If each day the amount doubles, and we call the current day 'n', then the amount of Lilly-pads is 2^(n-1) multiplied by the starting amount. For day 1 that would be 2^0=1. for day 48 that would be 2^47=140,737,488,355,328. 1 is definitely not half of 140,737,488,355,328. You misinterpreted the question. The question is *not* asking how long it would take to fully cover the lack from half covered. It's asking how long it would take from the beginning to cover half the lake. Which would be one day less than the amount it takes to cover the full lake.

[@chifowl8824]

+R. pizzamonkey I agree that 5 minutes answers question 2 as presented, but there are quite a few implicit assumptions in question 2. That is, all of these mystery machines are (a) copies of one another, (b) are started at the same time, (c) and are only being iterated once. Even though it takes five minutes for 1 machine makes 1 widget per iteration, I could easily have 1 machine make the widget per year. It would then take 100 years and 5 minutes to get all 100 widgets. I'd probably die before this finishes if I haven't transferred my brain into a computer, by then.

[@feartheghus]

Anyone else immediately get number two, then think there must be a catch, only to find out you got it right in the first place?

[@Robin-wk8uf]

Kyu ThePanda no, bc you dont study and are stupid af. Jk youre probably really smart

[@flare380]

yep......

[@liltoot1234]

Fearghus Keitz I did

[@yannismorris4772]

Fearghus Keitz I did

[@xXZ31t6esTXx]

Fearghus Keitz no way! Mind reader

[@hnng1439]

SO LITERALLY HE HELPS US REALIZE HOW DUMB WE ARE -_-

[@aminulhussain2277]

lil me *how dumb you are

[@psychostevenuniversefan5845]

No, but shure if you want to think you're dumb go ahead!

[@m_uz1244]

Psycho Steven Universe Fan You, uh, Misspelled "sure" buddy.

[@hezekiahramirez6965]

Biases don't make you dumb. We're perfectly capable of learning how to use our brains more effectively. Well, most of us at any rate.

[@oliviapeihopa4592]

5 minutes 47 days

[@oliviapeihopa4592]

The bat costs $1 more so remove $1, you are left with 10¢, since the bat only costs $1 more the 10¢ must be divided equally between the 2 objects, half of 10 is 5, so the ball costs 5¢ and the bat costs $1.05, 5¢ plus the additional $1

[@inchyokk]

Olivia Peihopa this logic is flawed

[@Katt1n]

Ekene Okeke Continue?

[@roxyroxane2345]

yes 👌

[@jzaar7483]

Olivia Peihopa not necessarily, although I do see what you are saying... my belief is that the question is the wrong question to the write answer...

[@johnpeterson5629]

I thought it said Hogwarts not Harvard

[@theultimatecloroxbleach8123]

John Peterson Lmao.

[@Quintinity]

I wish

[@velvetluna5503]

HAHAH I WISH

[@paparito.]

John Peterson lol i heard hogwarts too

[@CamoSquid]

what time stamp?

[@LYounes]

i answered it right....and im 14

[@LYounes]

okay...it takes 5 machines "5 minutes" to make 5 widgets so it takes 100 machines "5 minutes" to make 100 widgets got it?

[@milla5590]

IVIidnight I am 11 and I got them right :3

[@h.z6870]

I'm 2years old and I got it right... beat that

[@milla5590]

Nobody Thing Get real

[@firstnamelastname6118]

Im a fetus and I got it right

[@PhabioTheHost]

I was actually upset when I said 5 right at the beginning and the dude was like you said 10 right? I was saying " NO THAT'S WRONG!"

[@pokemonmaster2685]

Answers: 2. 5 minutes 3. 47 days

[@thedeeznutsduo949]

uhh i think thats wrong its 5 min and 36 days cuz it takes 1 machine to make 1 widget in 5 min so 100 machines working together to make 100 widgets 5 min. alsoits 36 days cuz its doubling so the last 12 days would be equivalent to the previous 36 days' work.

[@thedeeznutsduo949]

jk i read the problem wrong so since it doubles every day 1/2 of the lake is filled thet day before it is completly ull so it would be 47 :)

[@pokemonmaster2685]

daniel ji You are right with the first one but its doubling so it would be 47 because 47 days would be half the pond as 48 days is.. well it's hard to explain.

[@thedeeznutsduo949]

i know sorry

[@pokemonmaster2685]

it's ok

[@PFAlt]

2x+1=1.10 easy fucking algebra right there.

[@cleo7867]

Ya but people aren't thinking clearly and see 1+x and get .10

[@abhishekchoudharykhatkar4886]

I didn't get it! Can you explain? How 2x+1=1.10?

[@PFAlt]

It's simple once you get the logic. You know you have 2 items, so that gives you the two. x simply represents the price of the said objects. So together, they are 2x. Separately, x + x. But one object must cost 1 more than the other. So (1x+1)+x. When you simplify that, you get 2x+1. 1.10 is just the total they must add up to given by the problem.

[@abhishekchoudharykhatkar4886]

MeGusta GameStation ohh got it. Thanks :)

[@PickyMcCritical]

People tend to have a much harder time translating words to algebraic format than solving algebra.

[@Duyton]

System 2 is just called "How Phoenix Wright Thinks"

[@reinstaltmoska5525]

how he does not Think, its a dumb game with no intelligent choices and where the people who are condemned as guilty would very likely be not guilty on the vague dumb assesemnts and charges they suposedely did.so yeah, its forced bodylanguage, bad Graphics, bad animation and bad sound and Music, and no characters or story.the gameplay likewise, nothing intelligent about it, instead its better to be analytical and use a interesting way of solving cases.even his name is stupid.

[@maximeddy7588]

They both = $1.10 If the ball was worth $0.10 and the bat was worth $1.10 then the total price would be $1.20 Therefore the ball must be worth $0.05 and the bat must be worth $1.05 which if you used you brain would equal $1.10 ( because 0.05 + 1.05 = 1.10 )

[@pogvar]

Thanks captain obvious

[@2starSwelling]

Maxim Eddy but wouldn't it also be able to say the bat is 1:01 cents and the baseball 9 cents ? I know it's a trick question but still there's no real answer because of the MORE

[@Starguardianbard]

Toxic air nope. 1.01$ is not a dollar more than 9 cents. The question doesn't say the baseball bat is more than a dollar, it says it's a dollar more than the ball. Meaning the only way for the ballbat to be a dollar more than the ball, without breaking the 1.10$ budget is for the bat to be 1.05$ and ball to be 0.05$

[@rodolfoaguilar7756]

daniel mayse Correct. The way i answered this question in my head was the following: We know that the bat is $1 more than the ball. Taking that knowledge subtract that $1 from the total. You seperate that for a moment. You are left with 10 cents that have to be split by the two equally, since the initial value should be equal(Plus the $1 of course). So theb you have the bat and ball costing 5 cents. Then you just add the $1 to the bat and there you go. $1.05 and $0.05

[@hoihoi1312]

Let B be the value of the bat (in dollars) and let b be the value of the ball (in dollars). The equation can then be expressed as follows: B + b = $1.10. We know that the bat costs a dollar more than the ball, so we can write B = b + $1.00. If we substitute that into the original equation, we get b + $1.00 + b = $1.10. If we solve that, we get b = $0.05. We can substitute that into the original equation and solve for B. B will then be $1.05. Solution: The bat costs $1.05 and the ball costs $0.05

[@willowandluka5302]

If you set up a simple algebra equation it's an easy question. Some people are just lazy and answer too quickly, like myself

[@willowandluka5302]

Ball = x, Bat = x + 1.00 x + (x + 1.00) = 1.10

[@emeraldkargaming6507]

Lol

[@IamInfinity10]

Cole Lutz we know, you don't need to impress anyone because nobody cares

[@emonte8148]

Who actually takes the time to comment 'nobody cares' on a helpful post? Edit: ahhh, a 'Drew Lynch' and 'FaZe Apex' fan.

[@izyeboid6008]

emonte814 What? Lmao

[@ndricimhalili9793]

Well I learned not to be quick in answering questions and riddles. Because I would always be wrong. The easier the question is the more I'll think about it, trying to find a trickery in it.

[@leteveryoneknow]

+Ndriqim Halili That is good. With this attitude, in real life you are less likely to fall for a bait.

[@betabug_0044]

That's what I do too. Every time it's a simple question, I'll tend to read it more and try to find a trick in it

[@Halibard]

Fnaf Icon, Literally didn't even read your comment.

[@stanbroastman791]

Just accept you aren't that clever, if you cant even get there first time.

[@alip82]

+Stan Broastman are you stupid?

[@LapisStar]

Question 2. 5 Question 3. 47

[@Davi-kc7wz]

+Alex Savin wahahaha xD

[@LapisStar]

Oh crap. I'll edit that. Thank you

[@Aljbwri1986]

I though Q2. Answer should be 1 minute

[@LapisStar]

aljbwri Last no since at 48 minutes it was full, and it doubles every minutes, so half times 2 equals a whole. :D hope you understood. I suck at explaining.

[@maisa3523]

+Killer Melody I think they meant question 2, about the machines. But you answered correctly, the answer is 5 minutes.

[@BoomSqueak]

I got them all right, but I have definitely seen the latter two questions before and having the questions be presented as a riddle likely puts me in system 2 thinking automatically making me more prone to think about it more. I love having random riddles pop up in my recommended videos.

[@etreke]

I am a mechanical engineer who did not go to Harvard. I got the question right, and so did all of my mechanical engineering colleagues. Couple this observation with the statistic that less than 50% of Harvard students are majoring in the math and sciences - majors which involve regular exercise of system 2 thinking - we can make the general conclusion that the Harvard bit is just clickbait.

[@lukeoreilly464]

etreke yup

[@megjane7]

However, it is true. And frankly it is interesting that so many people got these wrong when they are so easy.

[@SerpentGameplay]

hangman I think giving out the information that "50% of harvard students get this wrong" also results in people knowing the question is probably a trick, compaired to just handig you the question out of the blue. knowing "smart" people get it wrong makes you think twice about your answer.

[@approveddust8367]

hangman it could be true

[@Maniclout]

SerpentGameplay Hey Rick! Nooit gedacht jou hier te vinden.

[@dominicditmyer6261]

If you did Singapore Math, this was your homework at age 10.. 😂

[@imoose5804]

+Dominic Ditmyer Not like it is hard or anything, most people just speed through it without really checking it.

[@MegaKaitouKID1412]

+Dominic Ditmyer It essentially boils down to a basic pair of double variable equations that you're able to present as a single single-variable equation even before you learn double variable solving. Which yeah, you learn pretty young. But that's the second process. The point of this test isn't to see if you know how second-process solve it, it's IF you actually use your second-process thought when confronted with questions.

[@KyleLi]

+Dominic Ditmyer #HongKong

[@patrickburke3098]

It's literally just 1+2x=1.1, just worded specifically to trick you. It's not at all difficult

[@michaellane2185]

+Dominic Ditmyer To do this test properly you have to answer them all in 30 seconds. It would be easy enough with unlimited time

[@abdullahabdulaziz]

I still don't understand how that ball is for 5 cents I didn't hear anything what he said the entire video I was just wondering how is the ball 5 cents

[@seraphiccandy21]

the bat is 1 dollar more then the ball. If teh bat was a dollar the ball would have to be 0 cents for this to be true...

[@abdullahabdulaziz]

seraphiccandy21 what about the remaining 10¢?

[@seraphiccandy21]

abdullah abdulaziz exactly thats why it doesnt work

[@david33482]

abdullah abdulaziz x=ball, bait= x+1 so (x+1)+x=1.10 x+x+1=1.10 x+x=1.10-1 2x=0.10 x=0.05 the prove... (0.05+1)+0.05=1.10 1.05+0.05=1.10 1.10=1.10 √

[@alexbuilds461]

David Biba just BC your in high school with this extreme math shit doesn't mean we all are

[@karlmachnow4961]

Sadly, I already knew all these questions as normal trick questions. So I remembered the solution using System 1.

[@jos2294]

I answered the first one right, should I be happy?

[@shubhankarsingh9154]

Lotha Fist no

[@jos2294]

Shubhankar Singh :(

[@shubhankarsingh9154]

Lotha Fist doesnt matter if you got the question or not Be happy my brother

[@jos2294]

Shubhankar Singh :D

[@daniellaw6294]

Lotha Fist same

[@ronnieceaquino827]

MY ANSWERS: 1.)5 CENTS 2.)5 MINS 3.)47 DAYS

[@16fazan]

+Ronniece Aquino how did u figure this out

[@grimreaper8575]

+golden zexed i wont answer for the first 2 since they might have had a complicated thinking process that i cant reiterate, but for 3 the process is usually the same for questions like it. if X double every day, and on the Zth day the area is covered/filled, you just need to half it by going back 1 day.

[@Vatis93]

+golden zexed If you answered 10 cents for nr 1. you failed to realize the bat would then only cost 90 cents more than the ball. The correct answer is therefore 5 cents, so that the ball costs 1 dollar more. For nr. 2 the time variable is the same on a 1 to 1 comparrison like 5 and 100. For nr. 3 you don't have to math the problem. It would be up to the 47th day that it covered half the lake, because if you reverse the process: say halving the full, it would then be halved on only 1 day.

[@16fazan]

for it said the bat is a dollar more than the ball and combined they equal 1:10 so 10 penny plus 100

[@Vatis93]

golden zexed But 1.00 + 0.10 is wrong. If you make the bat cost 1 dollar it then only costs 90 cents more than the ball: 1.00 - 0.10 = 0.90! Part of the question is that the ball has to cost 1 dollar more. Therefore you have to place 1 dollar at the bat, and the split the remaining 10 cents to between the bat and the ball (5 cents each). This gives you the answer: 1.05 bat and 0.05 ball.

[@samysaid1989]

5 minutes and 47 days are the answers. How are these questions for Harvard students? Even youtubers got the answers right

[@backtosquare1592]

That's because everyone on KZbin is a millionaire, has an IQ of 150 and is fucking my mom...

[@BloodyBay]

...and we all have Masters Degrees in every major known to man, _and_ we're all Black Belts in any martial art you care to name, even the non-Japanese ones. And all the men on KZbin have eight-inch penises, and all the women have perfect D-cup breasts. Don't forget those bits. ;-)

[@healthystrongmuslim]

+BloodyBay and vegan atheist pc gaming 90s kids

[@abhijeet3023]

yep right

[@rayvincyful1]

+samy said Because those questions are now very familiar to us, we can even answer without thinking. Or if those questions are not familiar, people here will think critically before answering because of what they have just watched. Now, try to give those questions to anyone around you. Most of them will answer them wrong.

[@rubyhamster5342]

(1 five cents (2 five minutes (3 day 47

[@2starSwelling]

Rubyhamster 3 one is correct but think it would be 20 minutes

[@Starguardianbard]

Toxic air number 2 is also correct. The machines are able to make 1 widget a piece every 5 minutes. 5 of them can make 5 widgets in 5 minutes. That means you could have 20 separate rooms of 5 machines a piece, each room would have 5 widgets made within 5 minutes. Now you can add all the machines together to reach your 100.

[@datboicruisinkft1068]

Correct

[@benosemo7341]

Your letter of acceptance to MENSA will be arriving shortly.

[@zerazara]

Nice, I got it right myself. I used at least 40 seconds on each thinking.

[@Lionbug]

never seen something as easy as this test

[@Gnurklesquimp]

I think it's supposed to measure how much system 2 attention someone pays as opposed to it being a challange of any other kind , going in knowing what they're up to completelly nullifies it

[@Lionbug]

M makes sense

[@bennyboy968]

Harvard students aren't that smart.

[@Ashcombeguy]

Exactly. Their daddys are rich.

[@killertom606]

+Peyton Chan or the fact that you are watching this video knowing these are trick questions and already using system 2 thinking while the Harvard students didn't walk in trying to beat trick questions lol and u would claim their there cause their parents are rich lol

[@leonhrad]

College students? We got these riddle questions in elementary school once.

[@Raw_Salad]

But young students approach problems with more creativity and with open minds.

[@pietd4781]

I know.

[@Raw_Salad]

***** You misunderstood or just ignored what I said. You laid out that problem in a form that almost no adult would get wrong. So what's the difference? The problem was originally presented in words. I could explain this further but I am sure that with that you could understand the point I am making. It isn't concrete it is just something to think about so don't think I am saying that, "Oh! All Children are better at problem solving than adults. You know why? Because they are more creative and open-minded." Not saying that at all.

[@blatz4306]

+Leo S Old and Young people think very differently.

[@pasijutaulietuviuesas9174]

+MrBigEnchilada In college, you do know algebra at that simple level. If you don't, you got accepted in college by mistake.

[@triedbuttdied]

its like the combination of the question being actually pretty unspecific/vague and that it seems extremely easy at first, that tricks people into thinking/believing something that seems logical at a lower understanding, but because they are sort of tricked into thinking it being extremely easy, after that, it makes people unconsciously not concentrate on it enough to actually be able to see the truth. for example, when it comes to the unspecific/vague part. the question "If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets?", the writer does not mention whether all machines would start at the same time, or even if the machines work together to make 1 widget, instead of each being the same machine making one widget on its own (there are literally more possible ones, but these are probably the main). its questions like these that can make people weirdly getting wrong, because the question is so unspecific that there can actually be more than one correct answer, if you base it on just the question and not on what the person who wrote it actually ͏in͏tended to mean ̛ ͜ ̀

[@Ho0pz4sho]

TriedButDied The question is deliberately vague in order to test your cognitive abilities. If it's not mentioned in the question, your overcomplication is not needed, therefore the question is easy to answer, even though it is vague.

[@noduzs]

But the thing is that there is not one possible answer then, because its so vague. So why does the writer only mention one possible answer then, because the writer has too vague of a question to only mention one answer. Otherwise people will just get wrong because the writer is incapable of keeping a balance in vagueness and the amount of possible answers to his question.

[@noduzs]

Its not necessarily that the question is just vague, its that its so vague that there actually is more than one correct answer. Even though he only mention one possible answer. Obviously you can make questions vague to make them harder, but not so vague that there actually could be more than one right answer.

[@Ho0pz4sho]

Nodus There is no other correct answer. 5 machine. 5 minutes. 5 widgets. 100 machines. Same 5 minutes. 100 widgets. The purpose of the question is for you to hold back on your initial answer, which would obviously be 100 minutes and think it through. Without adding extraordinary circumstances, 5 minutes is the only correct answer to the question.

[@noduzs]

But how would you know that the machines doesn't work together or if they start at the same time as he +TriedButDied said, i got wrong for thinking like that. and afterwards understood this.

[@haveasmartday]

Let x be the cost of bat and y be the cost of ball x + y = $1.10 (Equation 1) x - y = $1 (Equation 2) Subtract the two equations, we get: 2y = $0.10 Therefore, y = $0.05

[@matiashogden1240]

Scarlet Crimson x+x+y-y=2x, not 2y. Your answer was correct anyways tho

[@haveasmartday]

Matias Høgden It is 2y since (x + y) - (x - y) = x + y - x + y = 2y

[@matiashogden1240]

Why subtract the 2nd equation tho? Couldn't you just add? My mistake for correcting you anyways, didn't notice 'subtract'

[@meguro_vlogs2170]

Why even bother making a second equation ? If the ball = x and the bat is 1$ more, then the bat is x+1. If you add them together it should make 1.10$ so x+x+1=1.10 2x + 1 =1.10 2x = 1.10 - 1 2x = 0.10 x = 0.10 / 2 = 0.05. You shouldn't make a second variable if you don't have to.

[@dusk2dawn55]

5 and 47. I'd like a full scholarship to a party college of my choice so I can relive poor decision-making and little to no hangovers. Thanks.

[@foppecoenen758]

wooow xD

[@roybertbrown3983]

dusk2dawn55 ur wrong

[@stachvdwindt4644]

Caitlyn Papsosjxndbbx why is he wrong??

[@_x_asgard5_x_861]

Caitlyn Papsosjxndbbx your are daamn stupid lol

[@e.c.4173]

We had these questions in class five. It's not even tricky.

[@iSaintRichie23]

Well fuck me, I was doing the riddle while taking tax into consideration...

[@TomD0131]

LOL

[@firstnamelastname6118]

ROFL

[@legrostas2033]

I did the same... we're noob

[@quadhd1121]

you used system 3 my friend

[@joshnorth4761]

yeah... but taxes in what region? lol

[@DDRisTricky]

A for Q2 is five minutes. A for Q3 is 47 days.

[@thepurityofchaos]

+DDRisTricky I KNEW IT! :D

[@harshyalam1372]

+DDRisTricky exactly what i was thinking!!

[@gloomy5505]

yesssssss I got it lol

[@DDRisTricky]

+PixelPigu Try to visualize it in your head. For example, imagine you own a taco truck. It takes one guy to make 1 taco in 1 minute. If you had 100 guys, to make 100 tacos, it will still take 1 minute because every guy in the 100 is making 1 taco each.

[@yellowthundergaming827]

NOONE CARES IF YOUR 12 YRS OLD AND GOT THIS RIGHT!!!!!!

[@iexist1738]

But I'm 12 years old and got this right....

[@lonzi3ros3]

yellow Thunder gaming No one* You're*

[@discovaria9507]

lol i'm 10 year old got this right

[@kuro2140]

But I am 14 and Indian....😂

[@CrosbysMusic]

Have you read thinking fast and slow, a lot of your recent videos remind me of that book

[@BiteSizePsych]

+Crosby Dunkley Yes I have actually. I first heard of cognitive strain from that book. Anyways, I will be moving away from cognitive biases for my next couple of videos. Just to switch it up.

[@CrosbysMusic]

Ah fair enough, enjoying the videos so far :)

[@thegreatall]

I was about to post almost the exact same thing... I read this book and almost everything in this video is in the book... even the questions are identical. I am pretty sure Daniel Kahneman even used system 1 and system 2 in conjunction with fast brain and snow brain.

[@MimKoRn]

+Bite Size Psych you should have quoted the book, when you used the 'system 1 system 2' approach which is obviously a concept which the author of the book introduced... It is not very fair to talk about it as if you made it up for the sake of the video.

[@equanimityandtranquility]

+MimKoRn He said ''you may have heard''', that does not sound like he invented it to me.I would have been nice to give the author of the book credit but if you had to do that to everything you would spend an awful lot of time saying who invented what.

[@Davi-kc7wz]

they should have given the answer ! I got 5 min. and 47

[@lazeryoshi]

You're correct

[@Amelia-om7ew]

yup

[@SGCGoliath]

0.05

[@irtiza3870]

it should actually be 1min as i takes 5 mins for 5 widgets and dived that equally you 1 min for each widget. 100 machines working at the same time.100 machien gives you 100 widget in 1 min. im actually only 12 and get out smarted dumb ass

[@lazeryoshi]

+Irtaza Dragneel it's 5 minutes because the machines are working at the same time, not in sequence. it takes 5 minutes for 1 machine to make 1 widget, 5 minutes for 5 machines to make 5 widgets and 5 minutes for 100 machines to make 100 widgets

[@mikaylawall5120]

5 minutes, 47 days

[@sajeallen1552]

Good, I got them right haha

[@SqueezeDaMenaxe]

How five minutes?

[@alexjackson7131]

+sirrat ullah each machine takes five min to make a widget which means it would take five min for 100 machines to make 100 widgets

[@RonAhL]

i thought the answer is 1 minute in number 2.,

[@RonAhL]

haha..

[@mush2938]

Oh I get it now. If the ball was 10 cents, the bat would be $1.10, and the total would be $1.20 (This is before I finished)

[@alialballaa4497]

as usual.. great video! so the answer for Q2: is 5 and for Q3 is 47 right?

[@anyapearce2392]

+Ali AlBallaa yea it is

[@karimbaraqji8160]

+Anya Pearce its 24

[@lydiawatchefo2318]

+Karim baraqji It's 47.

[@EE-sy1zi]

+Karim baraqji no!

[@jamesgrey13]

+Karim baraqji It's 47, because it only takes a day for the lily pads to double in size! That means that a day before the 48 days, that it took to cover the pond, the lily pads were half the size!

[@yoavsigler4457]

For those questioning why it's 5 cents, do the math. x+y=1.10 x=y+1 x=1.10-y y+1=1.10-y 2y+1=1.10 2y=0.10 y=0.05

[@yoavsigler4457]

(you're welcome)

[@marcosmoura911]

No one was questioning

[@yoavsigler4457]

again, you're welcome

[@XxXuNkN0wnXxX11235]

This is the most complicated math i have ever seen for an algebra question.....its just x+x+1=1.10, no need to add the extra variable

[@rehmsmeyer]

Yoav Sigler Oh yeah? Well I have 2 coins that add up to 0.30 and one of them isn't a nickel - what are they?

[@Sauce_Man]

2. 5 mins 3. 47 days Right?

[@lucofthedrawn9424]

i think so

[@Idkwhatmyhandleshouldbe123]

Yes

[@varuntaneja7073]

bro 47 days is right answer for third one

[@seancannon2193]

1. A + B = 1.10 where A = B + 1, therefore A = 1.05 + 0.05 2. T = 5(M/W) Given is: 5 = 5(5/5), 5 = 5(1), question asks: T = 5(100/100), T = 5(1) 3. I honestly don't know the formula here, but simple logic dictates that if it doubles every day then the day before it was at half, so 47 days...

[@leonardmilea7079]

The size of the patch = 2^n where n is the number of days. If size of the patch = size of lake = 2^48, then size of lake/2 = 2^48/2 = 2^47

[@random20000]

Answer to 2nd question : it will take 5 mins Answer to 3rd question : it will take 47 days

[@mitrisharaiha8916]

The last two answers are 5 minutes as it takes a machine 5 minutes to make 1 widget and as there is 100 to make and 100 machines then it will only take 5 minutes. The second question is 47 days. This is because on the 48th it will be fully covered as half that is 1 day before

[@hamizanhr]

baka

[@chubamoa3640]

Mitri Sharaiha if it takes 5 machines 5 mins to make 5 widgets (let 1 machine take 1 min to make 1 widget) so it would take 1 min for 100 machines to make 100 widgets..

[@robertjeffries934]

Jeremy Carryme no. because it still takes each machine 5 minutes to make a single widget.

[@kasidi2629]

Mitri Sharaiha they where pretty easy

[@Milesco]

@ Jeremy: You're doing exactly what the writer of that question expected you to do -- see what appeared to be a pattern and then lazily jump to a conclusion without really giving it any thought. Yes, it's tempting to do that, because it avoids so much effort. But it's wrong. 5 machines taking 5 minutes to make 5 widgets does NOT equal one machine taking one minute to make one widget. In fact, in this scenario (if you think about it -- and of course, that's the whole issue: you have to *think!* ), it would take one machine 5 minutes to make one widget. If it takes one machine 5 minutes to make one widget, then 5 machines could make 5 widgets in the same amount of time (5 minutes). So then you can see that 100 machines could turn out 100 widgets in 5 minutes. If the question had said it takes 5 machines *_seven_* minutes to make 5 widgets, the easy (but incorrect) "answer" wouldn't seem so obvious and tempting, and most people would probably get the answer right. It's the fact that all three numbers are "5" that throw people off, because it strongly appears to be a pattern (our brains are evolutionarily wired to recognize patterns) and it makes people think that all of the 5's are directly mathematically related, but in fact only the first "5" and the last "5" are.

[@riverwashere_]

Not looking at the other comments, are the answers 5 minutes and 47 days?

[@DanielleVanLeuven]

Yup

[@buddha3g74]

i came up with the same answers

[@javinova2091]

thought it was 4 minutes

[@xzavior1057]

Jack Carver its five minutes, god damn, quit trying to correct people(total sarcasm, peopel should know its five, im just messing around)

[@alyssa.h]

Jack Carver its 5 mins

[@1RamTough]

2. 5 minutes 3. 47 days

[@1RamTough]

+Bob Hob you should learn math

[@1RamTough]

+Bob Hob well what the "right" answer

[@1RamTough]

+Bob Hob dumbass

[@1RamTough]

+Bob Hob clearly you can't figure it out.

[@1RamTough]

+Bob Hob this is the last time I'll respond to your ignorance.

[@gumarks_]

When I see this type of questions I automatically think: "This must be a trap, think better" I switch to Sector 2 of my brain and get the correct answer XD

[@lanathepartyqueen]

Shit, I'm dumb...

[@sharos2168]

Dee Pee Lol sadly that is a picture of a singer

[@lanathepartyqueen]

Sha Ros lmao not its not. 😂😂 it's of an actress and that just proves that you're just fucking jealous and just want to ruin whatever that perv said to me.

[@victor-xd4nl]

Dee Pee lmao fucking perv

[@dingo9696]

+lana-xoxo It's funny, because you say "ruin" because you want people to call you sexy. But ironically you also call him a perv, because you want to act like you don't want to be complimented. You can't have it both ways.

[@Ivan-gp4tr]

lana-xoxo Shit,you are...

[@AdisKayMusic]

*5 minutes* because each widget takes 5 minutes to produce. As long as you have an equal amount of machines & widgets - It will always be 5 minutes... 8 Machines will still produce 8 widgets in 5 minutes. However 8 Machines will take 10 minutes to produce 16 widgets. *47 days* because It doubles in size each day so, 1 day ago it was half the size...

[@FunkMonk64]

kek

[@videocommenter9085]

And the first with the bat

[@gimmesubstopothemorningtoy6974]

MY FUCKING 12 YEAR OLD SISTER GOT IT RIGHT IM 24 AND I FAILEDAJBXUSANISBDOWXBUSBDHD

[@sametgurkanozkul6446]

Heaven Kaahtle You must educate yourself.

[@gimmesubstopothemorningtoy6974]

Get Gud Amd i aint talking book

[@DarthVaderOfficial]

Thanks for being honest :)

[@datbanan2717]

x.Puglover.x im is 13 year old boy that dousn't study and ends up forgeting things more often in school and i got all of these right

[@dinorami2691]

Datbanana2000 _ *am a* and *doesn't* and *I end up*

[@terrysohn6602]

thought process number 1 the bat is 1 dollar more than the ball with the total price being 1.10. you can think 1+2(0.10/2)since there are 2 items with an original combined cost of 0.10, before you add in the 1 dollar. number 2 the number of machines are the same, the number of widgets are the same, therefore the amount of time must be the same. the fact that all the numbers are 5 in the explanation is just to mislead you. Think of it this way, 5 machines and 5 widgets make a whole, or "1" and it takes 5 minutes to reach it. 100 machines and 100 widgets also forms a "whole" identical to the "whole" from before, thus the time to get it should be the same, 5 minutes. number 3 focus on useful information, especially "double in size" and the time in takes to cover the lake, which is 48 days. you can deduce that you have to reverse the doubling process by x, because it says "half the lake" opposed to "entire lake", you can translate "entire" and "half" into 2 and 1. what does it take to get from 2 to 1? -1 (days), -1 is x. 48-1=47.

[@steventpowers]

The answer to the 2nd question is 5 minutes. The answer to the 3rd question is 47. Right?

[@philopateeratef4661]

yep

[@MrFXman]

Yuperdoodledoo

[@dbzkidkev2]

The third question was on a math exam I had in college.

[@lukejones9927]

Thanks I couldn't get the 2nd

[@Optimus6128]

The 3rd came to me for some reason instantly, and then I tried to think backwards what would even be the wrong spontaneous answer. The 2nd confused me for a little, but I visualized 5 machines working on 5 things and 100 machines working individually on 100 things and got it. Already by the 1st I was prepared for these tricky questions that seem so simple, so I got it right. And that's the thing, if someone came and say those questions and you have 10 seconds to answer else you fail, maybe only the 3rd would be answered instantly, generally I would stress and need more time, because I would know maybe it's a simple thing that I'll get wrong and will make me feel like an idiot. And that's the psychology in those questions, I am wondering how much time did they give to the students of the experiment.

[@lucylikesbirds]

how is the ball 5 cents if the bat is $1.00 more and the total $1.10?

[@BiteSizePsych]

+Lucy Bob 0.05 + 1.05 = 1.10. I got this question wrong the first time I heard it too

[@lucylikesbirds]

oh Ok I get it know thanks

[@oliviamcardlelongo370]

I still don't get it! It could also be 10 cents right?

[@Anna13Kavan]

+Olivia McArdle Longo, no, it cannot be. But imagine, it is 10, therefore you have ball 0.10 and the bat is 1.10 as it is 1 dollar more. So it is 1.20 in the end. It is easy. x + y = 1.10. x + (x+1) = 1.10. 2x = 0.10. x = 0.05. Here we are : )

[@jacquelynchin5513]

the bat is a dollar more than the ball. so if the ball is $0.05 then the bat is $1.05. the total will then be $1.10

[@persimmon93]

If the bat costs 1 dollar more than the ball and if the ball was 10 cent then the bat would only be 90 cent more than the ball. I got this wrong my first time and felt dumb.

[@TTKMKaizen]

+persimmon93 When you think that only 50% of the people considered the most gifted students can also get it wrong, it makes you feel better ;)

[@Itsjosby]

+TTKMKaizen they are not gifted. People in MIT are gifted. There is a reason a lot of out presidents went to Harvard. It is because it doesn't require you to be naturally intelligent.

[@thebluefus]

+FOTAnimation my children will go to Stanford. I don't have any children but it's the thought that counts

[@shadowprince4482]

Me too, although I got the end answers correct. It happens, we're only human after all.

[@duck_that_quacks]

Let bat be Y Let ball be X Eq(q): X + Y =1.1 Eq(2): X + 1 = Y Substitute 2 into 1 X + (X + 1) = 1.1 X + X + 1 = 1.1 2X = 1.1 - 1 2X = 0.1 X = 0.05 Hence, the ball costs $0.05

[@GlitterPixi3]

For those that didn't understand the last 2 questions: 1. Each machine takes 5 minutes to produce the widget, so if there's 100 they'll all produce 1 after 5 minutes. 2. Each day they double in size, so when it doubles from the half size it becomes full. If it's full on the 48th day, then it doubled after the 47th day.

[@hernandezz4912]

If your wondering the video starts at 0:00

[@matthewcombs7491]

Thatrandomguy567 thanks

[@Khemiri9]

you're*

[@mavexx4359]

vghnmj wow lol he's just correcting him. "A person who never made a mistake, never made anything@

[@Khemiri9]

i mean on top of the cringey joke, he did a grammar mistake, i mean wouldn't have corrected him if it wasn't that cringey, also my native language isn't english either :)

[@hernandezz4912]

Mr.Issues right on, dude YOU'RE very honest and excuse my joke

[@CanaleYourGame]

Hey!i have a question,i solved all 3 riddles,i don't think i am a genius,so,was it because when i read the title:"riddle that very intelligent people can't solve" i entered solving-mode so i payed more attention?if so i suggest you to change the title because if everyone here solves it,well you know what i mean...

[@MrChickenwarrior]

+frulcino It's because you watched the video and already knew that you had to think over the question instead of blurting out the answer. The test only works when you don't know what it is about.

[@BiteSizePsych]

+frulcino Hey frulcino. Yeh I realized it might have spoilt the riddle a bit but I was mainly focusing on explaining system 1 and system 2 thinking.

[@dragon4c3_71]

+frulcino its more of a clickbait

[@domenicogonzalez7354]

Obviously you're not a genius because you're forcing out big words and using them in unusual places just for the sake of sounding smart.

[@JoeDavis]

+Domenico Gonzalez you used bigger words in your reply.

[@benthomas9776]

Bat and ball riddle proof: Assume that Bat + ball = 1.10 and that Bat = ball + 1. By substitution, we find that 2*ball + 1 = 1.10 2*ball = 0.10 ball = 0.05 Therefore, the ball costs 5 cents. ■

[@kryttercakes]

I got 5 minutes and 47 days

[@kryttercakes]

judging from the comments, this is a common mistake or a fact, but I am confident in my answer

[@nahroottoe]

Indigo Wizard 342 Same.

[@halooshka1904]

I believe the answer to question no.2 is 1 minute because it takes one machine 1 minute to make one. and we have 100 machines for 100.. a minute! :)

[@MicukoFelton]

+Halooshka Addas it takes 1 machine 5 minutes, it takes 5 machines 5 minutes and 100 machines 5 minutes, we're concluding they are working at the same time, not 1 after another and the process itself lasts for 5 minutes.

[@xxudonoxx]

+micuko vicious But how do you know it takes only 1 machine 5 minutes, it never says that

[@Crates-Media]

More than 50% of Harvard students now pay someone to solve riddles for them.

[@KoyasuNoBara]

1:04 "Yet, there's a surprisingly simple way to improve you're performance on this test." Yeah, it's called "I've already heard this riddle via a KZbin video."

[@gretawilliams8799]

1st problem x+1+x=1.1 (i was wrong at 1st) 2nd problem.. we can use unitary method,... machine time product 5 5 5 machine 1/time time product 100 x 100 5.5.100=100.x.5 x=11 3rd problem.. 47 days but you can use G.P here...

[@Dhirallin]

50%??? I don't believe that. Source please (starts checking the sources above.)

[@Dhirallin]

I looked through the relevant source and I can not find the 50% figure you quoted (for Harvard students on the bat and ball question.) In fact I cannot find percentages for the individual questions in the CRT at all. Only the percentage of people getting 0, 1, 2, or 3 questions right. Please tell me what page you pulled that 50% figure from?

[@Nathan-rn8cr]

Rajie Music do you really give a fuck?

[@Beremor]

Why shouldn't he? Critical thinking is a worthwhile activity. Even if the problem itself might be every bit as straight-forward as it appears, there's always the possibility of tangential learning. So basically, it's a win-win for a learning mind.

[@Yashahiro_]

on the video he literally says how many people took the test, and how many failed. no where near 50 maybe like 25% of people who actually took the test, not of all Harvard students. don't know why people would click bait something important like this.

[@wearyswag4715]

he could litterly be making all this up, facts are important

[@aliasmask]

It's interesting to note that if you started with 1 lily pad that was a square inch that it would cover all of South Dakota in 48 days given that the area was doubled each day.

[@ironmilutin]

5 and 47

[@Iceburgfaint]

lmao..100 minutes, 47 days

[@Iceburgfaint]

wait nvm.. are all the machines on at once..or does one machine make one then the next one turns on?.. oops sorry not enough information to decifer

[@balder7810]

Bingo

[@ironmilutin]

Anthony Scianimanico each machene takes 5 minutes to make 1 , so 100 machenes can all make 1 in 5 minutes , and that totals 100 , and since the lilypads double in size , day 48 is full lake , day 47 is half a lake , day 46 is 1 quarter etc...

[@matthijsjansen7869]

its just to easy

[@raptorthegamer5524]

2. It will take 5 minutes to make 100 widgets 3. It will take 12 days for the lily pads to cover the lake, as the growth is exponential