Why is X Generally the Unknown in Mathematics?

[@TodayIFoundOut]

Now that you know why X is generally the unknown in mathematics check out this video and find out the answer to the question- When Did People Start Using Punctuation?: kzbin.info/www/bejne/Znu1Y4JjmLJ6atE

[@yelfouladi]

Great insight but why not push a little further. At least oriental commentators of history have pointed out that Descarte's work reflects a lot if not all of what Al-Ghazali has produced on logique. Descarte's "Discourse on the Method" is strikinly similar to Al-Ghazali's work. Algebra was introduced to the west by the arabs. It seems way more likely that Descartes was inspired by the arabs mathematical work translated by spagniards as he seems to have been inspired from their phylosophical work.

[@captaincokecan]

Like the great 'philosopher' of our time DMX said. "X is going to give it to you" ... That said I am unsure if he delivers outside of business hours. check the terms and conditions i guess.

[@cutsceneenjoyerzz]

Captain Cokecan he gon give it to ya

[@femboygaming64]

yeah that seems about right

[@ashtreylil1]

dmx is great

[@MisterMooo]

Sir, I wish to inform you that you have been selected in an unclear process a black clothed man in the style of a rapper who has received the given name of ‘X’ and as a result of being selected in this process the man known as ‘X’ has a plan which he will soon execute in which he will decide to distribute something that is of an unknown quantity or nature but is likely to be dangerous to yourself.

[@Siberius-]

Is the man not referring to himself.. as in "I'm gonna give it to ya", as in, a physical altercation? I could be wrong, I haven't studied the literature.

[@HellSpawnRulerOfHell]

Why? Because X Gon Give it to Ya.

[@melsy9355]

Hell Spawn Ruler Of Hell teo?

[@treymagathan847]

Hell Spawn Ruler Of Hell Nah, FedEx gon' give it to ya!

[@squirrel5809]

I don't like ads, but I super liked that ad because we got to hear your more hipster regular dude voice in contrast to your professional polite alter ego ^_^

[@RoboBoddicker]

He's like a weird narrating superhero

[@waylandgriffith9655]

I'm sure others have written this but you have a big "oopsie" in this video. DesCartes said "cogito ergo sum". Your version, "cognito ergo sum" means "I hide therefore I am". Other than that, I even enjoyed the ad.

[@xianartman]

wayland griffith why does google translate write both cognito ergo sum and cogito ergo sum as the same? Cognito alone is "aware", cogito alone is "Think/reflect"?

[@iBasheveryone]

incognito ergo sum 😜👌

[@liamdienemann8937]

Cognito does not mean hide

[@aliedperez]

"cognito" means "known" or "acknowledged"

[@EffectPlaceboThe]

Coitus ergo cum

[@finno-px6of]

I’m doing math study, I take 1 break and this is the first video that pops up :)

[@alanhowitzer]

It is fate.

[@alandouglas2789]

Finn Byrne maths*

[@bd_ART]

1:18 It’s called “Al-Shai’ “ not Alshalan

[@jonstfrancis]

Mediaeval Spanish did have the sh sound and it was written with the letter X. So the use of X for Arabic shín makes perfect sense.

[@theguyfromsaturn]

jonstfrancis Exactly!

[@jonstfrancis]

W didn't exist. And it is the phonetic value, not the shape that is relevant here. ش is the written letter for "sh" in Arabic and in Mediaeval Spanish x was the written letter used for the "sh" sound.

[@oppie47]

Catalan and Portuguese still use the letter X for the SH sound, don’t they?

[@Geferulf_TAS]

I always found it to be such a pain that X was the unknown back in grade school, it always made algebraic multiplication a pain!

[@BearWolf925]

Nelson's TAS and Game Archive I think that's why they adopted the dot 4•x+6

[@davidsonjoseph8991]

Or you could write 'x' as two opposite sided parabolas that connect to each other. If you don't understand what I mean, Take a moment and think about it.

[@soggymammoth4864]

That's what we always did; effectively a backwards 'c' and a 'c' connected.

[@Huntracony]

It's more of a pain that people are taught the wrong symbol for multiplication the first 12-ish years of their lives.

[@soggymammoth4864]

I think the symbol used is different depending on the nation in question.

[@Synos001]

Next on "Today I Found Out": Why in the Queens English its pronounced 'zed' and in American English, 'zee' Along with other spelling and pronunciation differences across the pond.

[@EpicWayWay]

Some say “Izzard”

[@midnightman8469]

Somehow Simon makes an ad fun to watch, ah I love this channel!

[@jacobarmstrong9967]

the at home parts are great! wish Simon would do it more/longer

[@Twewy13]

8:24 It is "Cogito, ergo sum", not 'cognito'

[@MrTohawk]

qed

[@brandonjslea1562]

InCorgNito www.reddit.com/r/corgi/comments/6wzwsf/incorgnito/

[@midshipman8654]

Zoofus well, if we’re going to be pedantic the phrase “dubito, ergo cogito, ergo sum” is more close to what Descartes was trying to convey. I doubt, therefore I think, therefore I am.

[@Twewy13]

Jackson Almodobar But that isn't the quote. That is a latin translation of a french quote by poet Antoine Léonard Thomas more than 100 years after Descartes first used that phrase. So no, that would not be pedantic.

[@midshipman8654]

Zoofus I meant being pedantic about the thought process behind the well known quote, not the authenticity of the quote itself. It’s not specifically thinking that validates one’s existence, it’s doubting, which implies thinking, witch implies our own existence.

[@lunarotimas]

To get your item to focus; put your other hand behind it when you bring it close. It basically makes the background a solid colour and allows your camera to focus on the one item. Hope this helps!

[@CateOwen]

One day I was reading the KZbin comments and someone said "Simon Whistler is daddy"; now I can't get it out of my head. Every time I see him I think, Simon Whistler is daddy, so that's a thing now.

[@SgtWiking]

2:53 "X? Why X? Give her the D." -René Descartes 1596-1650

[@MtlCstr]

Question: Why do Brits call a "Z" zed, while Americans call it zee?

[@OptimusPhillip]

The letter Z originates from the Greek, where it was called "zeta". When it was imported into English, "zeta" evolved into "zed". Later, after the American Revolution, the name of the letter Z was changed to match letters such as B, C, D, whose names consist of the letter sound followed by a long E sound.

[@surferdude4487]

*Clears throat in Canadian* In my opinion, zed is the better way to go because it is harder to confuse with C. But, I don't know if that argument holds any water because we still have B and D, M and N, Also B and P. The military uses a standard phonetic alphabet to avoid exactly this type of confusion.

[@GeoffBernard]

I'm jealous of that shower. BTW - I really enjoyed this form of ad. Much better than being blasted to a commercial right in the middle of a video.

[@user2144]

Why do door bells make a ding dong sound?

[@tomclanys]

Because the original door bells had real bells and were being struck by a metal pin, causing the familiar sound

[@SuperDeinVadda]

Normally there is a electromagnet in there that pulls a metal rod against a ringing plate. Once the magnet turns of the rod returns to it's original position but because it still has some energy stored it overshoots and hits a ringing plate on the other side. Ding dong.

[@HackSawSees]

Perfect. The Wix ad came right in the middle of the Dollar shave club ad. And then when I skipped the Wix ad, the player went into forever loading fail. WAY TO GO, KZbin!

[@blackstonerzein5166]

Being Arabic Myself I Can Confirm That "ِAl-Shalan" Does *NOT* Mean The Unknown Thing In Arabic

[@hoihoi1312]

BlackStoner Zein So, what does it mean? Genuinely interested here

[@yasser5846]

@@hoihoi1312 I hope you’re still curious, there is a mistake there. The mean “alshy” الشيء

[@waynegoddard9441]

Thank God you said ZED and not ZEE Mr Whistler and no mistake. Watched your long video about the making of your channel and it was excellent. This is another top vid. Keep it up.

[@saxbend]

Wayne Goddard big relief! He makes me shudder when he uses colonial words such as expiration and obligated. If he's going to do that he should put on an accent.

[@hoihoi1312]

saxbend He did say math though

[@rfpowerdude]

Simon, as an engineer, I found your final bonus fact about the education comparisons between countries much more intriguing than the rest of the video. Glad I watched to the end! Don't get me wrong, I enjoyed this one in its entirety and all of your videos, but this bonus fact just illustrates a possible need for an entire video dedicated to just this one subject. It shows how important it is to assess the state of our education system in the USA. Thanks for the great channel!

[@playc.holder6432]

Your intro is so smooth I didn't even notice I accidentally clicked on an suggested video to get here. Might as well stay.

[@lauraheyman2011]

I loved your "Dollar Shave Club" ad. Well done! 🥰🥰🥰

[@jensenhealey907efi]

6 Blades! Wow! Total whisker annihilation using blade overkill :)

[@joeblow411]

Descartes is in a bar having a few drinks. The bar tender asks if he would like one more. Descartes says "I think not." and promptly disappears.

[@kevionrogers2605]

Considering it is a geometry book it seems to make sense that X would be used as the horizontal axis number line as the base, with Y as the vertical, and Z being the depth. Thus, X axis would be the first order teaching tool for points, magnitudes, lines, rays, numbers, etc.

[@donna30044]

At 8:23 -- oops! Descartes' observation was "Cogito ergo sum." Cognito is close in meaning, from cogitere: to learn, become aware but is not what Descartes posited. How unlike you to err.

[@disorganizedorg]

Inserting the promo between the main piece and the bonus facts works well. Those who found the main part uninteresting would not hang around for the bonus facts, but they'd be less attentive to endorsements too.

[@bk-vh8dp]

this is related to the poverty fact that you mentioned but high PISA scores of many countries is attributed to cram schools. so basically, many countries especially in asia basically have another school day after their regular school day that only focuses on math. also, just the the fact that something is ranked inherently forces people to think in a hierarchy when in fact the range of scores between countries isn't so vast.

[@ianmorash9208]

You should put an ad timer when you do your sponsorship plug. Or put it at the very start or end of the video. Love your work keep it up!

[@Ratharian]

Should also be noted that in physics letters stand for other things. For example m is mass, a is acceleration, g is gravity, f is force, w is watt, j is jules, and s forth. X y z have no corresponding notation in formulas

[@matteotarsi2208]

The quote by Descartes is "cogito ergo sum", "I think therefore I am".

[@cuboidbirdsgaming1100]

“Cause no one likes a neck beard” He just straight up roasted neck beard wearers. Lol. Love ya guys ♥️

[@melissamenchaca9121]

You are the only one entertaining enough for me to listen to the dollar shave club ad... that is one hellofa sharp razor!

[@CaptPatrick01]

Simon, answering the questions we did not know we had.

[@iknowyou393]

Relationships remind me of Algebra. I look at my X, and try to figure out Y.

[@rollinwithunclepete824]

That real-life commercial was better than most!

[@donna30044]

That you are touting Dollar Shave Club while sporting that magnificent facial hair is both ironic and hilarious. Thanks for the giggle.

[@ThorirPP]

I have noticed one glaring flaw in what you said: X being used by the Spanish to represent the sh would be because X was used in Spanish (Old Spanish to be more precise, Spanish has changed a bit since then) to represent that very sound. Unlike what you say here, this X wasn't from Greek Chi and didn't have a "ck" sound, but rather came from the Latin X which had a ks sound in Latin but was used for a sh sound by the time of Old Spanish. Of course later both the sh sound of X and the zh sound of J in spanish merged and became later a kh sound (very similar to a h sound), which happens to be the same sound that the Greek letter Chi has in modern Greek pronunciation. But not only is that just a coincidence but other than in few proper names and Latin American spellings that didn't change, X that was sh has been replaced by J and X is only used today for the classical ks sound. Basically there is a very simple reason why X would be used for the Arabic sh sound: X was the Spanish way to write that sound in Spanish. Nothing to complicated here.

[@mohamadarifpramarta66]

i agree

[@uruiamnot]

I went to a school once that was a state (and national) powerhouse in academics as an elementary. The powers that be decided that this district needed to use forced busing. So while the dominant local community was upper-middle class (i.e. whiter than a sheet), there was an entire grade that was essentially all low-income black. I scored really high on a standardized, competitive test in math. I nearly aced it. So I, along with 3 other high-scoring students, received awards and accolades for putting our school into the top of the state-wide competition. It sort of surprised my teacher and my classmates, as I was a recent transfer from a backwards, rural district, and my abilities were unknown at the time. But back to the school busing for desegregation purposes. When I went outside for recess, I will never forget how we who were local would interact with the kids who were bused in. There was a particular girl that I can never forget. Her name was Poughkeepsie, and she was meaner, stronger, and faster than virtually all of the (white) guys in the grade ahead of her. I think I was an exception to that as I was a bit bigger, but she was able to out-compete me in the long jump I remember distinctly. Her sprint speed was almost unassailable by all but the fastest black boys, and then only in the longer races. She would catch quite a few unsuspecting boys trying to beat a path to the swingset and trip them from behind. She was regularly fighting both girls and boys on the playground. I wonder where she is now and whether she learned anything in math class in the best school in the district during her 1-year stint in whiteyville? She and her compatriots that were bused in to our local school ate free/reduced meals at the cafeteria. I packed a lunch and staggered to think of eating that junk. Maybe cafeteria food makes you mean and strong? Of all the bullies I knew in school, she was probably the most prolific. Since I don't remember any other names of any other classmates in that school, I guess she made an impression. I hope you enjoyed my vignette of public schooling back in the day.

[@shotintel]

Just have to say, for what I'm use to seeing of you, seeing that Dollar shave club plug was amusing to say the least.

[@MohammedAlshareef23]

Note for 01:18 . The word for unknown thing is “shai’a” which is also can be translated to “thing”. “Alshai’a” = “the thing”. So. ( 3 Shai’a = 15 means Shai’a = 15/3 which is equal to 5 ). To hear the pronunciation of Shai’a copy this ( شيء )

[@lexzbuddy]

So funny, all I could think to myself when you were quoting the PISA mathematical results was, "I wonder how many people can understand this". Great channel, love it.

[@1969Kismet]

This topic always reminds me of Sir Billy Connolly:"I wasn't in class the day they did the x times table."

[@Pining_for_the_fjords]

Before this video I got the Zoopla ad where the boy snail says to the girl snail _"Remember when we lived there?"_ and the girl snail replies _"That was your ex."_

[@maxis2k]

Wisdom and virtue are like the two wheels of Descartes.

[@stephenphilbin3919]

Today I didn't really find out why X is the algebraic _go-to_ symbol, but still loved the video anyway. :D

[@slate2720]

This channel has so many awesome videos.

[@spicychad55]

X? Why not... Y? Y not?

[@Aezeus]

HAHAHAHAHAAHAHAHAHAHAHAHAHAAHAHAHAHAHAHAHAHA

[@markoalex8819]

Xactly!

[@eZU4nQsWN9pAGsU38aHj]

I think my favorite part was the ad part 😂 you are a great salesman

[@jaschabull2365]

Of all the letters, mathematicians had to pick one which was already a Roman numeral. Just recently, I mentioned that X represented ten, and some guy was dumbfounded and insisted that, no, X is always of unknown value. And, of course it also had to be one which was also used as a multiplication sign for maximum confusion.

[@concernedcitizen6313]

Very fascinating video, and the ad you did was entertaining, but the line that Descartes actually said (at 8:24) was "Cogito ergo sum," not "Cognito ergo sum." It's an easy thing to mix up because "incognito" (meaning "unknown") is a word that's been adopted from Italian into common English usage, but "cognito" means "known," not "to know/think," and so while I'm not 100% sure where that "n" comes from, as it is no doubt related to "cogito," it's likely part of a past participle inflection with which I'm not familiar (since I don't know Italian). Therefor, "cognito ergo sum" is ungrammatical, but the closest approximation of a translation would be "I am known therefor I am" -- and that sounds like someone with a serious obsession with celebrity. Perhaps Julius Caesar once said it? Doubtful, but fun to think about. Anyway, I really hope you enjoyed this comment. Please leave a thumbs up if you do, and as always, thanks for reading.

[@sleeptyper]

Oh the irony... Dollar shave sponsoring the channel that tells us how to sharpen the 12c$ disposable razor blade from local mart.

[@guilemaigre14]

I am sorry, but even thought Descartes had a big role in popularizing thoses notations, the one who came up with using the alphabet for parameters (known and unknown) was François Viète. And if i am not mistaken the first to introduce the exponnant notation for the powers was Simon Stevin.

[@samanthastuessel7986]

Why is it called dollar shave club if it's more than a dollar? 🤣🤣

[@akinmytua4680]

Samantha Stuessel I think because the razors are only a dollar.

[@samanthastuessel7986]

Autymn Maas ahhhh, ok savy. Thanks. I'm actually thinking about getting it lol

[@samanthastuessel7986]

Mike Anderson If that's a joke you missed the mark..I'm sure it's not the first mark you've missed 🤣🤣 and I'm probably not the first woman to tell you that 🤣🤣

[@who919]

Samantha Stuessel I was going to post the same comment to join up is $5 but replacement blades cost $9 for 4 blades which amounts to $2.50 a cartridge

[@uegvdczuVF]

Because 6 years ago when it started razors did cost 1 dollar. And btw had best promo video ever kzbin.info/www/bejne/kIaqaqSPia-Aqas

[@163reasonswhyrealestateage4]

Now for another bonus fact: Descartes famous saying isn't "Cognito Ergo Sum". The correct saying is "Cogito Ergo Sum". I hope you found this correction helpful.

[@kevinbyrne4538]

Comparisons (among nations) of spending on education and results on standardized tests are a bit misleading. Most countries administer the tests only to those students who intend to attend university, whereas the U.S. administers the tests to ALL students.

[@sapa1895]

Greek "Xenos" (Ξένος) is pronounced Ksenos (doesn't even have a chi "χ") and means stranger or foreigner not unknown so that hypothesis isn't possible.

[@Markle2k]

In classical Greek as well as modern Greek?

[@IrKeNoVa]

Markle2k in both.

[@midshipman8654]

Fragkoyiannis Savvas It can also be used to describe an unknown. Linguisticly speaking it’s not a wide leap for a word meaning “foreign” to have connotations of the unknown as the two concepts often go hand and hand. This kind of linguistic bending of meaning is quite common in history.

[@sapa1895]

Markle2k They're pretty much the same language

[@sapa1895]

Jackson Almodobar Uknown is άγνωστος (agnostos) in Greek, maybe in English you can use foreign & unkown interchangeably in some specific situations but not in Greek. Even if they were pretty much the same that doesn't change the fact that chi is nowhere in ξένος, so the hypothesis still doen't work.

[@bloodgain]

I call shenanigans on the "printer suggested" theory. If they had far less need for 'x' blocks, they would simply have fewer blocks. Printing was a business, and it wouldn't make financial sense to keep more of a letter block around than they would expect to need. So unless his printer had recently been paid to print something that made heavy use of the letter 'x', thus requiring him to commission extra blocks for it, there's no reason he'd have significantly more of them than he did for 'y' (fairly common by comparison) or 'z' (slightly less common, but by a small margin).

[@mjc0961]

2:54 - Hey it's Tony Stark who hasn't had a haircut in a while

[@gordonlawrence4749]

On a Friday night it's more like "I drink therefore I am"

[@TheMimiSard]

I think you make an ideal person to do a shaving commercial. You have a head that may need some sections shaved, and a beard that would require trimming, shaping, and outlying areas shaved to give it nice definition.

[@TheMimiSard]

Also that shot of your neck made me notice the top of your chest hair.

[@louismelahn1805]

This has probably been said before, but the line is “cogito ergo sum” (no “n” in the “cogito”).

[@eternumdroida]

Thank you for the content. ♥

[@TodayIFoundOut]

You're very welcome :-)

[@eternumdroida]

Have an amazing day! Your work helps me learn new things and concentrate at work at the same time. :D

[@sparkyenergia]

I have heard it said that 'working in imperial is like putting a handicap on yourself' (or something to that effect). I wonder what the US result would be like if you did not work with imperial calculations.

[@alexlandherr]

Maybe a series on the History of Mathematical Notations?

[@d0pomein]

i always thought it was because abc, xyz. eg a^2 + b^2 = c^2 x horizontal axis length, y vertical axis height, z width. x^2 + y^2 = r^2 and so on

[@Chaosxinc]

I can't be the only one who found Simon shaving the highlight of this video.

[@frankbauerful]

Interestingly x is used way more often in introductory maths classes than university. Actual mathematicians and physicists commonly use letters that are related to a word from the context the equation is used in, e.g. p for probability or v for vector. It is mostly in exercises that have no use other than to exercise that you find the letter x. In other words x is typically not just unknown but also meaningless.

[@abdoassaidi1468]

1:15 The Arabic word for "unknown" is *Shay'on* wich literally means : a thing. If we add the prefix "Al"(-The- in English) to it, it won't be unknown anymore, like if we say: The thing, it is not unknown. I'm Arabian btw.

[@raed010]

Something is confusing me in this video. I grew up speaking Arabic and I have never heard of the word Al-shalan (الشلان). The common word for unknown is Majhool (مجهول). Has any other Arabic speaker heard of the word referred to in this video, and can you confirm its meaning?

[@tiasw8734]

No it's should be Al shai'un I watched in Ted talks

[@syedmuzaffer904]

They mean الشيء not الشلان

[@radicaledwards3449]

there are known knowns and there known unknowns then there are unknown unknowns, things we don't know we don't know

[@pammatthews9743]

In regards to the testing as well, we here in the USA test everyone no matter what their IQs are. These test scores are then put in with the other countries scores, some of which do not believe in educational programs for students with developmental disabilities

[@hoangtran4736]

lol i like using t in my work, just to mess with my professor whenever the class is against him.

[@hzgl]

would you make a video on why x,c,v are used to represent cut, copy, and paste quite universally across many computer systems?

[@FranzPerez21]

Ad at 5:01 Bonus facts start at 7:34

[@Amy-zb6ph]

I like to change the unknown from x to u when it's an annoyingly hard problem because then you get to write f(u), which is pronounced f of u. lol

[@morgengabe1]

I thought Xmas was a pun on Christmas that can be read as Kissmas

[@Xeno426]

The "adjusted for economic condition" thing at the end kinda points out a certain problem with poverty in the US.

[@jackpaulryan1211]

X used to make the "sh" sound in Spanish. Don Quixote was pronounced "Don Key shotay" when it was written.

[@CreativeQueenx]

Have a nice day all 💚💜❤💛💙

[@Tucandroll]

Like your little ad for the razors

[@FlameRat_YehLon]

Now we need to know why delta is generally the, umm, delta in mathematics, and why epsilion is generally the "sufficiently small positive number" in mathematics.

[@mastermike890]

Woo! Great video. Always hungry for math related facts :)

[@symbolxchannel]

Also, "x" used to be the signature for illiterate people... In other words, it was a placeholder. "It is also used as a replacement for a signature for a person who is blind or illiterate and thus cannot write his or her name." en.wikipedia.org/wiki/X_mark

[@CreativeQueenx]

I always wondered that too...

[@mikecorbeil]

Funny with the Shave Club razor promo, and it does seem to be a very good razor. As for the US having spent $115,000 per student while the Slovak Republic spent $53,000, this`d need further explanation; because, f.e., how much Slovak money was worth to citizens in the country, vs the same in the US. Iow, the relative values, rather than only the nominal, is relevant.

[@playnicegames]

Can you please explain how the rear view mirrors in cars work to dim the bright lights when moved to a different angle but still giving you the same view 🤔

[@kimberlycooper4170]

10:00. Pertaining to how much money is spent per student in the USA, there might be two reasons why so much is spent and so little education is accomplished. First, the cost might be because the cost of living is higher in the USA. Second, in the USA, a lot if Americans seem to think, "It's only good if it costs a lot of money and isn't complicated." (That's also one of the reasons that many Americans spend so much on vacations, cars, houses, weddings, etc.) Third, instead of public funding of public schools, more and more public money is being handed over to for-profit publicly-traded corporations (PTCs). The goal of for-profit and PTCs is to get as much money as possible while giving customers as little product and service as possible. Fourth, instead of free Medicare For All and free mental health care clinics, public schools are expected to provide those things: school nurses, school psychologists, school therapists, etc. Fifth, our Republican and neoliberal Democrat politicians are deliberately passing laws and defunding public schools to make education cost as much as possible while giving children poor education so that politicians can justify their handing over public schools to for-profit PTCs. Take for example Florida politicians who voted to require public schools to have gun-carrying officers to stop mass shooters from killing students. At the same time, the politicians didn't give the schools or law enforcement agencies money to pay for those officers. So, the schools will have to take money away from education to pay for officers. The politicians could have spent one-time money to create secure entrances, like banks have, to identify, stop, and contain shooters before they enter the schools! I'm sure

[@jed3219]

Simon, have you been on TED talks yet? I feel like you'd be a phenomenal speaker if you already haven't, I'll have to check, keep up the good work, friend!

[@NRNF1776]

Its good to note that dollar shave club only sends to 4 locations... I was really disappointed that i couldn't get it for my boyfriend.

[@JediNg135]

"Doctor Carvey's easy shave BUTTAAA"

[@sallylee4924]

Students in Asian countries do literally get at least 2 years ahead in math compared to the US and Canada. Things are generally taught 2 years earlier, and students learn more advanced math in the last 2 years of high school in Asia.

[@_Hodgepodge]

Does anyone else think it ironic that Simon, of all people, is advertising a razor brand?

[@GUYANESEGT]

this guy is amazing. love the way he explains things

[@kirbymarchbarcena]

So much trivias about this letter

[@johng7410]

I always thought Xmas the X was a sort of picture of the cross

[@jordanhopkins5463]

thx for the awesome content