Can you solve the temple riddle? - Dennis E. Shasha

View full lesson: ed.ted.com/lessons/can-you-sol...
Your expedition finally stands at the heart of the ancient temple. But as you study the inscriptions in the darkness, two wisps of green smoke burst forth. The walls begin to shake. The giant sandglass begins flowing with less than an hour before it empties, and a rumbling tells you that you don’t want to be around when that happens. Can you use math to escape the temple? Dennis E. Shasha shows how.
Lesson by Dennis E. Shasha, animation by Artrake Studio.

[@lei916]

"Ignore the duo" *burns duo with torch*

[@rickjames8960]

Ignore the duo, ignite the duo. Same difference.

[@dunyum2dollar624]

thats how you ignore people, you burn them

[@stampysaithelavacat1991]

I liked all four of these, They were really funny.

[@littleface3373]

Free fire squad with you friend in a nutshel

[@Niiue]

i know how to ignite them! *BURN THEM AT THE STAKE!* wait you said ignore? i thought you said ignite....

[@rinshad]

"ignore the duo" proceeds ro set both on fire

[@luthermorrisjr1657]

🤣aaaahhaaaa

[@HollyLamovsky]

copy

[@starcandy488]

Rin it’s at 3:29

[@susamogus8331]

Instructions unclear, ignited them instead

[@EeveeDemon]

“to”

[@Vilopatra]

Step 1: check if the curse has green eyes Step 2: compliment their eyes

[@mathguy37]

the altar does though

[@milkimusic6683]

This is so overused ngl, it was funny at first but not anymore

[@williamfaria2032]

@@milkimusic6683 green smoke, green eyes, I see a connection

[@ashercd6487]

Alright, I'm taking your eyes until you can behave and learn how to use them

[@jamespotter1436]

They do lol

[@gregheffley5745]

Me: Dennis, did you find the exit? Dennis: Ozo.

[@August.Swiftie.13]

lol I remember this

[@Boilermakers270]

Too bad you still don't know what that means

[@August.Swiftie.13]

@@Boilermakers270 frrrrr I wanna know so bad😭

[@chaytsai4890]

The nostolgia 😭

[@saakmalo8273]

Why are all these riddles always set in deadly gruesome situations. Give me a riddle about serving cake to children at a birthday party for once.

[@asy0ulikeit]

Chuuey lol

[@kirbyisagood6836]

But you have 10 cakes, and 9 are poisoned, and 1 is safe. You must find which cake is safe in under 30 minutes or the children will explode.

[@sonicmastersword8080]

Chuuey the mind works better with greater stakes.

[@angelaphsiao]

We need to raise the steaks

[@user-je8fl2cu5y]

Men surpass themselves in critical situations.

[@BB-eu1jw]

you know you're not cursed, but why would everyone trust you?

[@IDCSAO]

why would they know about the curse?5

[@BB-eu1jw]

oh, no one else saw them knock the thing down or whatever?

[@CatLover-vp4qb]

Simeon Gavalov They didn't see the inscription saying the temple is cursed.

[@nathalybabushka5564]

Simeon Gavalov cuz they dint know about any possessions so

[@Inkyminkyzizwoz]

*you're

[@andreashaugeandersen2421]

Another solution would be to agree that the group which finds the exit just walks out, then the rest can see which path no one came back from since he said "the curse ONLY affects their communication" therefore not their movement

[@adamis2cool]

that was my conclusion as well

[@Inkyminkyzizwoz]

Communication can be non verbal

[@mooseot]

Couldn't you send 3 groups of 3 down the 3 tunnels as well, and if no one finds it, it has to be the unexplored tunnel?

[@irishelder1485]

Yes that’s what I thought as well

[@Inkyminkyzizwoz]

No, because that would only work if the possessed ones were guaranteed to lie, which they're not

[@mooseot]

@@Inkyminkyzizwoz they would not be able to be truthful to foil the plan, because they are always paired with at least one truth teller. They could only tell the truth, or lie and be outed

[@Inkyminkyzizwoz]

@@mooseot If both possessed ones were in the same group and one of them lied and the other told the truth then you wouldn't know

[@mooseot]

@@Inkyminkyzizwoz How wouldn't you? There would still be a 2-1 consensus from the group toward the truth.

[@meinfisch2056]

This is why you always bring milks for your students. Milks can cure any potion effects.

[@RiskierGoose340]

Hahahhahahaa minecraft

[@erinthedemonhog2090]

Lol Minecraft

[@marivicflaviano900]

yes

[@alexchandler4213]

Thank you for existing and making good jokes. I needed that

[@crystalshard1925]

Lol

[@TakeoffProd64]

Just keep flipping over the timer when it’s gonna run out lol

[@ritter3723]

beeg smort

[@lurifos9576]

Brayn zise : Ultra Large

[@mau2759]

@@lurifos9576 lmao

[@Jhanlie16]

just how do they flip that giant timer?

[@hexhurhgu6067]

@@Jhanlie16 Good question.

[@goransimon8711]

My dad came up with another solution: As there are 9 of us in total, 3 go into each door (you also go into one with other 2 poeple) and the last door you can know through the process of elimination.

[@starsiaeve4649]

So many lazy people

[@DISCO-munication]

This won't work though. The cursed students may lie only sometimes, so we have no idea whether they are lying or telling the truth at any given time. If only one student of either trio is arguing with the other two, does this mean that: a) he is cursed and is lying, while the other two students from the trio are telling the truth (and the other cursed is in a different group) OR, b) he is not cursed, is telling the truth and the other two from the same trio are the cursed, paired together and lying? It would be impossible to determine and we would have two doors to eliminate, which means our chance of survival would be 50 / 50. (Which is easily solved if we pair together the two students from our own trio and we go alone.)

[@mehrunez4838]

@@DISCO-munication 2 groups of 4 would also work.

[@DISCO-munication]

@@mehrunez4838 It doesn't work. At 2:21 they explain why two groups of four won't do the trick.

[@angelicgacha]

My dad had the same idea lol

[@Just.breathe..]

I guess there is an easier way: As the curse only affects the communication the lead the leader can split the group in 2,3,3 and ask them to find the exit. And tell them that the group which finds the exit has to make 1 person stay at the exit and the rest should come back. In this way the group which has the missing person has found the correct exit.

[@Inkyminkyzizwoz]

*affects

[@ashwinshetye6873]

Its correct but not exactly easier

[@findafishgaming3650]

Step 1: confirm you have green eyes. Step 2: ask the spirits if you can leave

[@rocketradish3249]

Findlay Upward A-HA-HAAAA

[@thalespro9995]

Wrong Riddle plus u don’t have green eyes

[@Naxvarus]

"If nobody comes in 15 minutes we're legally allowed to leave"

[@itsoracle]

Findlay Upward Nice other riddle reference Ozo

[@breadandbutter644]

Ops wrong riddle !!!

[@0X0Patrick0X0]

Just send people out in groups and tell them to not return if they find the exit.

[@seth9236]

+Anastasia Shveytser (AnastasiaSh) but the possessed ones are only affected by communication not by action

[@korvokorvo]

+Anastasia Shveytser (AnastasiaSh) There is no 5th exit, there are only 4 exits + the path the artifact that you all just came from.

[@CurroCrespillo]

that was also my solution. Discard one of the doors, make 3 groups of 3 persons, if any of the groups finds the correct one they should go and wait outside as a signal. If all of them return, they should all take the fourth tunnel.

[@brendangilhooly5968]

doesnt work because what if they lie and dont come back

[@plastictouch6796]

Yeah but then two students might suicide by not coming back. Or two might come back from different tunnels. Not coming back when it isn't the exit or coming back when it is would be the equivalent of lying. So as long as u go one two three three, this would work, but two students might die.

[@VioletNKisHere]

Lesson learned: actually pay attention to who bumps into something or you won’t be able to trust anyone but you. Also keep a map. Plot twist: someone remembered the way, but they were cursed. If you asked them again they would say I did

[@jumpy2783]

I was thinking that you can have everyone go their seperate ways but they MUST bring something from the outside of they made it outside, and it must be exclusive to only outside, so when we meet up, if one person from a group has something from the outside then I know that they aren't cursed. But if a group has none they found the altar.

[@tuckerwilson5957]

Was my thought as well

[@rigidkiwilll1668]

I love this idea they could grab a flower or grass

[@rperm834]

@@rigidkiwilll1668 yeah

[@V7B817]

They are cursed and has the powers to create anything u said them to bring from outside 😢

[@rimorin9116]

I was thinking like what if you split into three and then tell them that if they find the exit, don't go back. So if 2 groups go back, we know that the path the other group took was the exit. And then if all groups go back, then the path you all didnt take is the exit.

[@dilophosaurusrex6783]

The problem is, that you yourself can't prove too the others that you aren't the cursed one.

[@Inkyminkyzizwoz]

*to And you were the one that read the inscriptions - the others didn't

[@teabeats76]

Don't tell them about the inscriptions or you're all screwed

[@nate_storm]

@thematiux t amogus

[@superrooster18]

Doesn’t matter. They can apply the same logic to see who is cursed

[@benjaminlee985]

@@superrooster18 No, because the leader could be lying about the tunnel he explored, and you don't have enough information to check if he is.

[@MrGuy271]

There's another solution. If you just tell the group to NOT come back if they find the exit (regardless of how you split it up), you could just notice who never came back when you return and go down their path. This works because you said the possessed members only have their "communication" hampered, their actual actions (Like, leaving the cave), are supposedly kept in tact.

[@MrGuy271]

My thought process is that the two liars actions are not influenced by the curse, only their "communication". I am trying to override this issue by turning an action into an inadvertent communication.

[@kojdify]

but image there is a trap in only of the tunnels and they die or something? this way is guaranteed

[@MrGuy271]

Cucas 360 I don't think the way mentioned in the video is guaranteed if there is a trap in one of the tunnels. I don't think that variable was accounted for. Maybe I'm wrong.

[@magicandmagik]

Genius

[@MrGuy271]

+Cucas 360 In fact, now that I think about it, the method in the video does NOT work if there is a trap in one of the paths. The criteria for solving this riddle was "ensure you ALL escape". If there's a trap and any of them dies, then not everyone escapes.

[@maxastro]

I am *unreasonably* proud of myself for figuring this one out.

[@Inkyminkyzizwoz]

This riddle needs a sequel about the other expedition!

[@avivastudios2311]

That'd be nice.

[@lizzerd5112]

What if one of the guys was trolling and lied even if they weren't cursed.

[@Paleoguy356]

The Doich Then they're an idiot and just killed them selves and their friends.

[@CatLover-vp4qb]

The Doich No one would be that stupid.

[@lizzerd5112]

Then what if the troll stabs everyone and runs in the right direction.

[@alexandernguyen2520]

Sorry, no trolls. This is a group of smart nerds. (Smart nerds who get an early deploma)

[@anonymous-fe1el]

The Doich Where's the weapon?

[@swayamgohil]

3:14 *PLOT TWIST* HE ESCAPES AND LEAVES THEM BEHIND

[@theteutonking3306]

But then when the group return, they could go down the only path with no one standing by it.

[@sarahsequeira9181]

or she, could be a she.

[@gumbitoicic9977]

@@sarahsequeira9181 Or neither, could be neither

[@alex2005z]

@@theteutonking3306 yea thats the easy way, tell them if they find the exit leave

[@whatshouldinamemyself481]

@@theteutonking3306 it could also mean they died 😂

[@cloudgalanes-rosenbaum1127]

You could also divide all groups into 3, including the trio you're in, and leave 1 path unexplored. This would create the same concept of answering with confidence for the students. If none of the explored paths show up as the exit, you know it's the unexplored path.

[@Inkyminkyzizwoz]

No you can't - I've explained PLENTY of times why that wouldn't work!

[@idontknowmuch3441]

@@Inkyminkyzizwoz why

[@Inkyminkyzizwoz]

@@idontknowmuch3441 Because if one group came back split then you wouldn't know how many people in it were lying, which would leave two paths uncertain - that one and the unexplored one

[@SuperDestroyerFox]

@@Inkyminkyzizwoz There is no way for a group to be split. There is always going to be two people saying one thing in a trio. If no other trio is disagreeing then listen to the single. If not then listen to the two people.

[@Inkyminkyzizwoz]

@@SuperDestroyerFox No, because you don't know how many people in the split group are lying

[@seokjinforever]

TED comes up with the most creative riddles

[@aussiewater]

*C R E W M A T E* *There is 2 Imposters among us*

[@Hans5958]

*are *impostors

[@ARandomSpace]

Suddenly this is a relevant joke. Very good.

[@sarppras4267]

@@Hans5958 thank you for doing my job

[@FakeLLama23]

@@Hans5958 isn't imposter correct as well?

[@NetheriteMiner]

@@ARandomSpace it's from 2 months ago, they made the joke when among us peaked. there is no "suddenly".

[@millerblaylock]

* the room begins to shake * Me, laying down on the ground: hey you guys this feels like a back massager

[@yukadiangelo]

Lol

[@smittywerbenjagermanjensen9281]

u were 100% one of the idiots who bumped into the altar, but honestly, me too

[@vivekraut9039]

hehe... nice one @Miller Blaylock.... lonely crab... :-]

[@Nulono]

*lying down

[@Orangephoenix6]

One other thing you could do is just tell each group “If you find the exit don’t come back.” If the curse only affects communication it wouldn’t force the possessed to come back in and then everyone just takes the path that did not have a returning group (as long as you keep track of who went where). While there is a risk that something could happen to keep multiple groups from returning, that could still happen in any scenario anyway so the risk is not much different.

[@Inkyminkyzizwoz]

Communication can be non verbal, so would include things like that

[@thebrazillianguytm2186]

@@Inkyminkyzizwoz But that would kinda tell who the cursed was then, since its only the cursed coming back

[@Inkyminkyzizwoz]

@@thebrazillianguytm2186 Not necessarily

[@thebrazillianguytm2186]

@@Inkyminkyzizwoz It works just fine If you sent 3 people to the exit and only 2 or 1 came back, that means they found the exit And if all groups dint found the exit, you know what the Duo os the cursed one, so you can go where they went just fine

[@Inkyminkyzizwoz]

@@thebrazillianguytm2186 Not necessarily. The ones that didn't come back could be cursed and not found the exit

[@cjrada82]

I'm never going back to that temple. I'm so glad I saw this video! We all got out safely.

[@uncle_fabioso4609]

Ted-Ed: It takes 20 minutes to get to the exits Me: it takes me 1 hour to get out of my bed

[@uncle_fabioso4609]

Draco Granger-Snape ikr

[@-DarkAvenger-]

@Draco Granger-Snape simp

[@seife41]

...

[@KingEthanofTheWorld7]

Step 1: Confirm that all the students and yourself have green eyes Step 2: Ask to leave the temple

[@Exonorm27]

LMAO

[@cjfdnqkn4374]

But they don't have green eyes

[@a_Playerwastaken]

the dictator is back

[@notamosentence8522]

Overrated riddle

[@maxandreoliveira]

I see this green eyes joke everyone but i dont get it, where is it from

[@Inkyminkyzizwoz]

A lot of people are STILL suggesting three groups of three, so let me explain yet AGAIN why that wouldn't work: The possessed students only MIGHT lie, so if only one group is split then you won't know whether there are two people lying in it or only one, meaning that there will be two pathways you're not certain about - that one and the unexplored one

[@jabbiter3575]

i didn't think about the fact that they would argue, and just i just firgured i could send 3 people down 3 hallways, and if none of them are the exit, the one that went unexplored must be it.

[@starsiaeve4649]

Laziness is often the path to despair. You have the time and the resources. Assuming is dangerous.

[@jabbiter3575]

@@starsiaeve4649 wha-

[@Inkyminkyzizwoz]

Won't work because the possessed students only MIGHT lie! How many more times?

[@mellowords]

I know it's silly, but the tropey setups are such a nice touch for all these. Really gets me emotionally engaged to problem solve!

[@No-wn2od]

I only watch for the setups sometimes. Just makes ‘em a bit more interesting.

[@Lyynity]

Plot twist: You yourself get possesed and the whole group dies.

[@alanjones8573]

Yes.

[@susamogus8331]

Plot twist:they just had to ask the spirits to leave because they all had green eyes

[@bobbybower9405]

Look up cross examined

[@JLvatron]

Nice puzzle. Solved it!

[@ohyeahiexist1372]

I literally have watched 15 of these, and I cannot figure any of them out

[@9LivesVanessen]

how did you not SEE who was possessed?

[@pkmntrainerelio8780]

Michelle Vanessen its a smoke + they only have torch to lit up the place + the building was quaking

[@lengteo3025]

Rowlet 01 I wonder how they did not notice GREEN smoke

[@limitededition6623]

Theyre all blue

[@thebrofistyt3667]

Michelle Vanessen everyone's except you is an identical twin,otherwise i cant explain why you cant tell who's cursed.

[@lioneatsorbedham2614]

They were possessed as you studied the inscriptions.

[@macandbees2434]

The curse be like: There are two imposters among us

[@bruhbro1181]

lol

[@lunarkookie9185]

You know what to do: 3:30

[@munk3064]

Terrible joke

[@skinnylegend2.040]

Love how with every ted ed riddle we always come up with a loophole 🤪🤪🤪 we’re so smartttt

[@nein4282]

This feels like Among Us with extra steps

[@seth2111]

Red is SUS!

[@nl8163]

here's my answer: as you know you're not cursed, you stay in the middle and you don't move. As the curse only affects your communication and not what you do, you tell everyone that if they find the exit, they leave. You divide the groups into 3, 3 and 2 and wait for all the groups to come back and you go down the path that the group which didn't return went down. This way everyone is saved

[@nqh4393]

Would the rest of the students trust you that you aren't cursed though? All they knew is that you could lie to them and lead them all to a dead end.

[@nl8163]

@@nqh4393 from what i perceive from the video and see from reading other comments, other people don't know about the curse it's only you. Plus, we're the leaders of the expedition! they'll trust us for sure :)

[@michelle9536]

This is really smart!

[@roejogan8683]

Isn’t there only 9 including yourself?

[@nl8163]

@@roejogan8683 yeah there are 9 people including us

[@danlewis1329]

Well, you could just tell them not to return if they find the exit. You said it only affects COMMUNICATION. This is MOVEMENT.

[@ukpkmkk1279]

Returning studemts might lie about not finding the exit when they actually did

[@howiechen4413]

One Day I'll die The returning students will never find the exit if they do as he says and the curse only affects communication so they will.

[@ShiaTheBunnyGirl]

9999 IQ

[@Nobelk12]

Yes thats what I thought at first

[@davisa.j4518]

would lead to a coordination problem with delayed/late groups

[@idus3131]

You can also make 3 groups with 3 members per group and leave one way out. So not matter in which group the cursed ones are, there is always somebody to trust. If you all come back and nobody found the exit or is arguing about it, you know, the way you left out is the one.

[@Inkyminkyzizwoz]

No you can't, because the possessed students only MIGHT lie! How many more times?

[@playerslayer1495]

See this is what I thought about too

[@annahuston4048]

But what if a trio IS arguing? Do you trust the two that are agreeing? They could be the two cursed people and be lying. So can you trust the one going against the other two? No, because they could also be possessed and lying. You have no way of knowing.

[@Inkyminkyzizwoz]

@@annahuston4048 Neither - you trust the other trio and the pair

[@joshuachoong8881]

Yeah this was the solution i thought of too. If the liars are split 0, 1, 1, then the two people in agreement are telling the truth. And if the liars are split 0, 0, 2, there will be 2 groups in agreement, and that means that the group with 1 person in disagreement is telling the truth.

[@stephengallagher2209]

First one I have figured out in my head.

[@EenGamer.]

Just run fast as fuck boi

[@goodman9451]

Use code _ _ _ _

[@BasketballPownage]

KEEM

[@Molinaridude]

Keemstar will in 3 minutes tops scout out all the possible exits

[@sophiaelisabeth6815]

EenGamer that's what I'd say

[@yummycookies7212]

Exactly

[@horizon5086]

I love how the altar is secretly the symbol for pi

[@dcfans4179]

Love this riddle

[@whynot-th3eb]

"don't worry about the possessed students attacking or otherwise harming the others. This curse only affects their communication." WORDS CAN HURT TOO

[@_karlymp_7352]

My mind would never think of a plan that advanced in so little time

[@oziwan9118]

+Foxtrot2021 The real problem is that in real life you don't even know that there is a unique solution which brings you to the exit

[@juliep.7494]

+OZIWAN exactly

[@diant5982]

+Foxtrot2021 I got to it in 1 minute.

[@jackwayne1626]

+Foxtrot2021 Indiana Jones will

[@Kalidor99]

Split them into 1(you)-4-4 or 2-2-2-3 or 2-3-4 and tell your students if you find the exit only one should come back, the other(s) stay outside, as the curse affects only communication and not survival instincts this will work without all that thinking :)

[@IndigoMist44]

I finally got one of these riddles correct lol

[@TheDegenerateTravler]

I love the thumbnails can you solve…. No teded I can’t. I never can 😂

[@capertillar4634]

3:53 Next riddle: Find out who's arm got cut off.

[@weijessica6749]

The problem is that your other group members won't trust you to go explore alone.

[@DAPTXDC4869]

If you don't mention the curse, it won't be a problem. Just assume the role of leader, split the groups of people into 3 and 2, and send them off, telling them to report back whether it is the exit or not. Of course, it's no guarantee, but people in a panic tend to divert responsibility to somebody else in dangerous situations (To avoid the risk of it being their fault if anyone dies), especially if there is someone willing to be a leader.

[@Siuwajansiwa]

+Ryan Jewell What if the you meant all of you?

[@nolascolee2109]

yeap, if you where the one bewitched

[@jhd3288]

no because im pretty sure you were the only one to see the cursed sign, or atleast that was shown in the video. so no one else would know about the curse and accuse u of being possessed. if im right lol

[@mrionutube]

You are the only one who knows of the curse. The 2 guys who were infected would have no idea about the curse. Only communication is affected by green gas. Not that they are possessed and want every one to die in there.So they have no reason not to trust you going alone.

[@tokyo5351]

This was one of the easier riddles, figured it out almost instantly. Still really fun tho!

[@jessicasmith8220]

Really need to get out there

[@haotianxie6684]

Or... since the curse only affects communication, tell whichever group that finds the exit to not return. And afterward just go to the tunnel without returning people?

[@azirul6764]

谢昊天 actually a good answer.

[@AmronFortis]

I commented the same thing, before I saw your post. Brilliant minds think alike ;)

[@rshua]

Thank you! I thought the same thing!

[@purple_yosh]

ion ion it only affects communication

[@anastasiaklyuch2746]

ion ion you have to be within a group or you won't be trusted. There are four options and nine people, so yes, one tunnel is unexplored, and if a group has two liers that return, the thirs in group leaves and that tells everyone there's the exit.

[@boy638]

Sadly I don't think I have the brains to figure this out in an hour, let alone under stress and panic. I'm sure Indiana Jones can haha

[@georgecataloni4720]

It's even worse. 60 minutes - 20 minutes exploring - 20 minutes reporting back - 20 minutes escaping = 0 minutes thinking. We'd all lose.

[@abeljudah6341]

+George Cataloni "it would take ABOUT 20 minutes" you could be quick

[@georgecataloni4720]

Abel Judah If we're gonna be technical: "less than 1 hour".

[@abeljudah6341]

+George Cataloni well, i guess we'll never know how much thinking time we really have

[@13thxenos]

+boy638 I'm sure they can. I solved it in less than 3 minutes. They are at a temple, so I'm guessing they are smarter than me. The 20 minutes time for using the exit path was for a "fast pace". This is a life or death situation. They will run like race horses.

[@jothesurvivor5269]

Yay! Got this one right after miserably failing the prisoners hat riddle🥴

[@halo_582]

same

[@avivastudios2311]

Cute emoji.

[@ValirValor]

We must do this riddle by some tasks: 1. Spot out 2 possessed students to spot out who is liar 2. We have 60 minutes to split into each task is 20 minutes 3. Explore for 20 minutes 4. Talk or explain for 20 minutes 5. Tell your class about the final hallway that you and your group explored ( if there is an exit )

[@ValirValor]

If you don't know, just comment to ask me

[@ValirValor]

I almost forgot... Make sure do not argue with your group!

[@ValirValor]

But how? We must tell.

[@lenzo1428]

“Don’t worry about the possessed students attacking or otherwise harming other students” Like this is actually happening in real life

[@jaypee9575]

What he means is don't factor that into the equation. He's not telling you that you shouldn't be anxious about it.

[@theivoryguy2476]

Nuh uh this happened to my buddy Ed last year

[@kcwidman]

Wait, how do you get the other students to trust you? How do they know your not possessed?

[@czechslovakian]

Because u told themS

[@MarioSMG64]

+Kai Widman you're*

[@TheAlexandreTube]

+Kai Widman i was gonna say the same thing, by the way im not sure if i know you or not. are you a sixth grader at EAS?

[@kcwidman]

TheAlexandreTube I do not know what EAS is, and I'm in high school.

[@facebuckets8175]

you're*

[@davidgrout1056]

According to the setup, the leader (you) can also be infected with the smoke. You should split into groups of 3, and leave one path unexplored. There are only two possible outcomes when the groups return. In Scenario 1 there is conflict in only one group, which means that both liars must be in that group, and the correct path is either a) the one they took (if the two liars are saying it's the wrong path) or b) the unexplored path (if the two liars are saying the path they took is the right path). In Scenario 2 there is conflict in two groups, which means there is one liar in each group of three, and the majority will be correct.

[@Inkyminkyzizwoz]

NO! NO! NO! How many more times? The possessed students only MIGHT lie, so that method doesn't work! If there's only one conflict then one possessed student could be lying and the other telling the truth

[@sammidoneff]

I’ve seen a couple saying that you should follow the path of whichever group doesn’t return, but reasonably you can’t be sure if the group didn’t return because they found the exit, or because they died. If you tell each group to leave just one student outside if they find the exit, you can immediately tell which way to go (and that it is safe) even IF the liar is in that group. Even if the liar claims one person in the group is missing because they died, the absence of anyone missing from any other groups proves that is a lie. The only way you’d have trouble is if someone from another group really does die, and the liars are able to manipulate the rest of the group into heading down an unsafe path… but this is all adding another element into a riddle which doesn’t really need that.

[@idontknowmuch3441]

You’re supposed to assume no one dies that’s why he included the thing bout none of the cursed attacking or killing anyone but I don’t know much

[@Bhuvan_MS]

What if there is no exit and the liar decides to stay back? The truthful guy has to return but the majority won't believe him.

[@Ravinian]

I was thinking you could just send 3 groups of 3 down three of the unknown paths. Tell the students that if they find the exit, just go out and don't come back. If when you arrive back in the center all or part of a group is missing..the path they took is the exit. If everyone is present, the unexplored path is the exit.

[@NXeta]

Nice

[@javiersosa1129]

+Ravinian That's exactly what I came up with.

[@dalenciabrown2745]

+Ravinian that actually makes a lot of sense

[@LanternFlea]

That's pretty smart

[@Tommy-op3gc]

+Ravinian That wouldn't work because the cursed person could just stand at the end of the dead end path and now you wouldn't believe the people returning that it it was a dead end.

[@pigllet9011]

If I found the exit I'm wouldn't be coming back

[@manuelmatteo6771]

I said the exact same thing

[@irinibaltazar4431]

and im distracted by their fingers

[@RobynHarris]

Call up the dean and tell him I need more grad students. Yes, again!

[@jasporflex1976]

Finally, an easy Ted riddle

[@Snoo29293]

Pretty easy, I finally figured out one of your riddles my self.

[@Inkyminkyzizwoz]

There seem to be an awful lot of people asking what happens if both possessed students are in a trio and both lie. If that's the case then that trio will give an inconsistent answer, so that will account for at least one of the possessed students, meaning that both other groups will have at least one student that isn't possessed and will therefore tell the truth, and as those groups' answers will be consistent you therefore know that they're telling the truth

[@avivastudios2311]

Good explanation. That's a long sentence there btw.

[@SacsachCCABP]

Basically, if one trio argues but others are consistent, both cursed would be in the trio. If only one cursed was in the trio, another group would argue, in which case you can just trust the majority.

[@Inkyminkyzizwoz]

@@SacsachCCABP You're forgetting that the possessed ones only MIGHT lie, but the rest is correct

[@aokayt9517]

Couldn't you just tell the people who find the exit to escape? Then when you all came back the people who didn't come back would let you know that they escaped and that that's the right path.

[@PurpleGearss]

But if the liars were the ones who found the exit they could come back and say they didn't find the exit

[@nixiontm]

they only lie when communicating, therefore they wouldn't come back.

[@oopdi]

But if everyone else said they didnt then you can know they are the two cursed ones because you know you aren't currsed

[@thatperson3711]

What if those two cursed students got paired together and came back saying they didn't find the exit. Or one of them was cursed and lying and the other one was telling the truth but u wouldn't know! Then u would have wasted time and probably none of you would make it out. Just my thought but that was pretty clever though😋

[@oopdi]

Miss Panda! The thing is this is a theoretical problem so everything is exact. Your always running at the same pace and no one is too scared and it isn't realistic. It is like a math problem.For example "Jeremy has 679 watermelons he sells 403 how many does he have left?" In a math problem it's 276 but in real life it is Why the fuck does he have 679 watermelons

[@shamalamon]

Unless I'm mistaken, you don't even need to know that YOU aren't cursed. You can split into 3 groups of 3, and travel down 3 paths, leaving one untravelled. When you get back, you should be able to deduce the correct path regardless of which group (or 2 groups) the cursed people are in.

[@Inkyminkyzizwoz]

No you can't, because the possessed students only MIGHT lie! How many more times?

[@LaukkuPaukku]

I was stuck for really long in the wrong approach of sending 0 students on one path, hoping to somehow get good enough of a ratio of truth-tellers in the other paths. Eventually it dawned on me that when I've sent 4 or 5 students to one path, splitting the remaining ones in the other two paths in any way is equivalent to sending all of them too on another single path, you cannot determine which of the two ways to go when there are 2 possessed among them. That completely ruled out sending 4 or 5 on a single path, making 3 the viable maximum per path.

[@sav9464]

Me keeping this in mind in case I end up in a cursed ancient temple with my 8 colleagues one day

[@Kizaco]

With a curse and also 4 hallways

[@kahaanshah7374]

@Kizaco 5 hallways

[@lowlycalvin5644]

What if the other students think you're the possesed one and want to go with you to make sure you aren't lying?

[@ZomifiedHam]

they dont know about the possession

[@abdelarmstr5173]

In which case you can just leave them there to rot in hell for all you care...

[@rileytmwood9148]

you go with the group of two, do the same thing and then use process of elimination to figure out the forth tunnel

[@gabrielschilhan6435]

the Problem with testing 3 doors is you Need 3 sure "truths" (true sayings about a passage). if there´s a disagreement in just one of the gr.of 3 you never know if there´s 2 liars or just 1. i´ve tried such poss. too, but you Need 3 sure truths in any way wich leaves you at Groups of three or five and above and yourself for any door you wanna check if you wanna afford the possibility of a lie. Going with the others still gives you a poss of a lie only checking 3 doors wich leaves you at at best 2 sure truths with the System ( you might fall on 3 sure truths in a given case but the System doesn´t assure you of that)

[@jennifercramer2156]

My face is too disturbing for spirits to enter it.

[@PicassoMossana]

this one has so many valid solutions

[@Inkyminkyzizwoz]

No it doesn't

[@MireidasRR]

If the possessed might lie or not, one of them should not lie. In this case, if they are in separate groups, only one group would argue. This gives the impression that both of them are in the same group.

[@keejj]

It's explained. It doesn't matter since a non-arguing group always tells the truth, except for the group of 2 if both possessed, but then all other groups will not argue since no one possessed and you can ignore the pair.

[@maryroserivera7946]

And as you are done thinking THE SANDGLASS HAS ALREADY FLOWED

[@KarlMalowned32]

I love these riddles. Never stop doing them.

[@meeramehta4742]

These riddles are so sick

[@rudeonion2816]

"Oh no! One of the students is potioned!" Nurse: *brings ice*

[@annaczechowicz622]

My thought was that u divide into 3 groups of 3 people and then u r sure that 2 cursed wont be alone If noone found the exit is in the unknown path

[@ngjon]

That won't work because you don't know if the possessed will lie or not for example if a group of three come back and one group is arguing you will assume that the 2 who agree are both the possessed where as a possessed might be agreeing with a non possessed

[@gjvy8452]

@@ngjon but couldn't you change your anwser (in a sarcastic tone of course) if that happens so you could signal the other groups that you were right and that they are the liars, because there would be no reason for a second person to change their anwser, and that the ones possessed can only lie or tell the truth so they shouldn't be able to think of something like that (hope that made sense)

[@01peter211]

NGJon that’s a good point

[@bmitchell922]

@ngjon in short, once you have 2 contradictions, you can deduce everything else from there. In the absolute worst case, if you only have 1 contradiction, re-ask all groups until you find the 2nd.

[@andypang1677]

Wait what if the exit is in the one without people and the cursed people are in a trio, then they both lie, so u trust them

[@wunwun3]

wouldn't u run out of time by thinking?

[@shishirgurung4427]

You compensate by running faster

[@rasmustikka1505]

@@shishirgurung4427 then why not run faster in the first place

[@sinnerthesinful552]

2:06 You literaly have 3 seconds to think

[@fireblaster8916]

It would take around 5 to 10 mins to get the answer depending on the person

[@amycooper2364]

not after watching this video

[@ZhongkangLiu]

Alternate ending: You tell your friends about your plan and now you have friends

[@FreefireGamer-yg8vs]

Isn't this riddle very relatable to AMONG US? The cursed students are impostors.

[@brunoalves-pg9eo]

But how would the 8 students know they can trust you?

[@abeljudah6341]

You are the only one who saw the curse notice

[@sciencepower608]

+Abel Judah but how do they know,what if they thought you was lying because remember all 8 of them didn't see it.

[@abeljudah6341]

+Science Power you don't have to tell them about the curse

[@kingsamalama8181]

+Abel Judah kool

[@arax20]

You can lie to them and not tell them about the curse.

[@ScottSimmons]

I think there are three solutions to this problem. The first, obviously, is above, but I think there are two more: 1) Split into three groups of three and try three of the four paths. Tell them if they find an exit, go ahead and escape. If everyone returns, the exit must be path no one checked. Since three people are in each group, at least one person would escape if he found an exit, regardless of who he's paired with. If fewer than 9 people return, you know one of the explored paths is the exit. You can safely take the path fewer than 3 people returned on. If three are missing, all three were not cursed. If two are missing, then one was cursed and decided to to return to deceive the others, and you can ignore his testimony. If only one is missing, the two that returned are cursed, and you can ignore their testimony. 2) Split into three groups of three and try three of the four paths. When everyone returns, if there are two disagreements, then the cursed individuals are in two different groups and you can side with the majority in every case. If the majority of one group found an exit, take that path If the the majority in all three groups failed to find an exit, take the unexplored path. If there is only one disagreement, then both cursed individuals are in the same group, and you should side with the minority. If either one of the two consensus groups or the one minority found an exit, take that path. If they didn't, take the unexplored path. Edit: I acknowledge the fault in my second solution below.

[@juliahormayer7255]

Scott Simmons 1) if only one returns you can't know whether the other two are telling the truth. So if they say, it's the wrong path, they could either be lying and the third one escaped or they are telling the truth and the third one is cursed.

[@juliahormayer7255]

I think you forgot that they could also be telling the truth.

[@ScottSimmons]

Julia Hörmayer Sure, I don't know if they're telling the truth, but I don't need to know. I know that one didn't return, and that shows that this path is the exit. If it weren't the exit, then all three would return. He says that the curse only affects their communication--that is, they would lie. It does seem that the problem assumes that they would do as they're told. However, if we allow that the cursed ones may hide to trick the others and deceive them, then I think we're still okay. If one returns and says "There's no exit on this path the other two are hiding," then if true, everyone else who returned would agree with the others in their respective groups, and we could safely identify the two who didn't return as cursed. If two return and say, "There's no exit on this path, the third is hiding," then if true, there would be at most one disagreement, and the truth tellers would be in the majority. In effect, that altered scenario 1 becomes almost identical to my scenario 2. The difference would be there are two ways to deceive--either by returning and lying or hiding.

[@juliahormayer7255]

Scott Simmons You're right I forgot about the part where it affects only the communication. If it wouldn't though and one would come back and say that the other two in his group were hiding, he could also be lying.

[@ScottSimmons]

Julia Hörmayer Yes, but now you have me rethinking my #2. Since it's possible one cursed person might decide to tell the truth, if there is only one disagreement, it could be that both cursed people are in the same group, or it could be that one cursed one is in that group and the other is telling the truth in a different group. If that's the case, then we would need to side with the majority, even if there's only one disagreement. I think I may need to retract my second solution. If there's only one disagreement, I'm not sure you could determine what the truth is, since only 3 of the 4 options were explored.

[@Lilith-gk5sr]

i like how 9 people went throught the tunnel but dont remeber where the exit was

[@justangelathegamer]

A simple solution is just to tell the group to each take some grass from outside and bring it back

[@heylol747]

Me: *reads title* Also me: “probably not.”

[@izzy-artmusicvlogs1234]

But I still watched it anyways.

[@bond-potter-morriarti7194]

Yet here you are...

[@annaczechowicz622]

0:48 showing middle finger to the ceiling xD

[@desaster903]

Lmaooooo

[@icarofrancopicerni8577]

You can go alone to one of the paths. Then you split the group in two and tell the students to explore two paths and if they find the exit, only one of them should go back to tell the rest. In the end, you'll be 100% sure if your path is the exit and you will know with 100% certain if one the other two are, because there will be at least one of them already out (assuming that one or both cursed would comeback). If all eight comeback, the fourth path is the way out. This is more eficient (there will be no questions and no discussion) and safer (you can immediatelysave 3 student)

[@idontknowmuch3441]

That would risk having both cursed in one group I don’t know much tho

[@mehrunez4838]

You could just send 2 groups of 4 out as well. Because if they all come back and say no exit, then the one unexplored hall IS the exit. (Assuming you didn't find it as well) this also ensures to the highest accuracy. The odds of both being assigned to the duo IS low, but not impossible. So if you have 4 tunnels, and 3 come back negative, that leaves only tunnel number 4 as the exit. This also works if you do find one with the exit.

[@Inkyminkyzizwoz]

No you can't - the video explained why that wouldn't work!

[@Bhuvan_MS]

Groups of 4: if 2 impostors are in a single group, 2 would tell truth and most probably other 2 will lie. So it's hard to make a choice. Actually impossible to be certain

[@idontknowmuch3441]

2:22 explains why

[@idontknowmuch3441]

But you said 2 groups of 4 then go on to describe situation w 3 groups

[@dontpostcringe5824]

I SOLVED THE RIDDLE ON MY OWN! WHERE IS THE VACATION I HAVE BEEN PROMISED?

[@sciencepower608]

WHY YOU ALWAYS LYING

[@CuriousConnman]

I did it too!

[@nex]

WHY ARE WE SHOUTING?

[@syanisah]

+nex LOLOLOlololoo

[@augustlundin]

IJUSTCAMEHERE,WHYAREWESCREAMING!!?!!?!!

[@cutiepatootiexx]

I’m rewatching all these riddles for the nostalgia and remembering when I watched this riddle a few years ago then couldn’t go to bed 👺

[@redeemed2bfree]

My 4th grade teacher would let us do these riddles as a warm up. :)

[@seife41]

nostalgia?? they are not old :D

[@desihirohamada]

Same.

[@rielhsliso8363]

5 years is old mate

[@lifedeather]

Yeah this one was kinda creepy lol

[@t3li5]

This is the first (and probably last one) I found!

[@KirillSlisenko]

What about 4 3 1 groups? I was thinking about that and I think it can work. If you have other opinion and time, please leave a comment

[@idontknowmuch3441]

4 would be the possibility of both cursed being in that group so it would be an even tie on who to believe if the two cursed lie and the other two are honest- I think but I don’t know much

[@idontknowmuch3441]

2:23 actually explains this or maybe I’m not understanding your comment

[@nicolasgonzalez8536]

Yes, me too, this would work because even if both cursed are in the group of 4, it doesn´t matter the disagreement because you know that the other two groups are indeed telling the truth, so you do not the information of the group of 4. I think this solution also works but I am not 100% certain

[@MariusGiurgi]

Unfortunately this solution does not work. (It was my original guess nonetheless). It only works if the 4 group is split (either 3/1 or 2/2) .. but if it’s NOT split (all of them tell the truth) it could be because all are not contaminated (this is one possibility) therefore the two contaminated ones could be either both in 3 group or one in the 3 group and one in the 1 group. Either way, if the 3 group is split 2/1 you don’t know for sure if there are two honest answers or two dishonest answers (because there could be 2 contaminated or one contaminate in 3 group) therefore you can’t resolve for the 3 group. As for the group of 1 this is useless (in this case) since the one can be contaminated or not and you can’t tell which one they are and if they are honest. So in such scenario you can only solve for 1 out of 3 (2 out of 4, including the first one).

[@nicolasgonzalez8536]

@@MariusGiurgi Yes, I think you are right, thank you for the explanation!

[@notNavindu]

Why am i red?

[@Umirua]

+Navindu Amarakoon ` Cause you be a native american

[@quinson93]

+Navindu Amarakoon You are wearing a red shirt.

[@whogivesadamnforuser]

+Navindu Amarakoon TRIGERRED!!

[@quinson93]

+tazydevil93 Indeed

[@pigcatapult]

+Navindu Amarakoon Because you're immune to green.

[@Inkyminkyzizwoz]

Common questions and suggestions in the comments: 1. What if the two possessed ones are in a trio and they both lie? 2. What if one lies and the other tells the truth? 3. How do the others know that you aren't lying? 4. Just ask them a simple question repeatedly until two answer incorrectly. 5. Just tell whoever finds the exit not to come back. Answers: 1 and 2. In either of these scenarios, only one group will give an inconsistent answer, so both others must be telling the truth. Any group giving an inconsistent answer must have at least one person lying, so both other groups must have at least one person telling the truth, so if only one group gives an inconsistent answer then the two giving consistent ones must be truthful. Remember, you only need reliable answers from two of the groups, as you can work out the other by process of elimination. 3. The most likely explanation is that you were the only one that saw the inscription and so the others don't know about the curse to begin with. 4. Theoretically, the possessed students could always tell the truth, so you could be there forever. 5. Must admit it took me a while to work out why this wouldn't work. Anyway, it says that the curse affects their communication, but communication can be non verbal, so would include things like this. The possessed students could 'lie' by not returning if they don't find the exit or returning if they do

[@amberwerwolfschool8927]

Dude smarter than Ted Ed

[@Fluffers355]

Yes but I’m not reading that

[@definitely.not.lulu.]

Thank you! I was wondering about the first one

[@ESALTEREGO]

5 is really stretching the logic

[@ESALTEREGO]

The possesed can lie but they cant control their actions (otherwise theyd kill the students)

[@steve4158]

After I put my shoes on, the part of my brain responsible for logic solving shuts off!😂

[@kiraosamu8081]

I think this is the second of these I ever figured out the answer to myself

[@yinghungman4471]

20 minutes to the exit? *Usain Bolt Takes 1 Minute*

[@vaporizedhollow98]

Shaggy takes 0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001 milliseconds

[@Car-rp8dg]

Vaporized Hollow you mean -infinite seconds ok

[@SJ-eu3wg]

My reading speed takes 0.000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000001 seconds

[@yinghungman4471]

86 likes?! Thanks guys!

[@yinghungman4471]

@RünerTheWolf 25 it is 0.000000000000000000000000000001, not 0000000000000000000000000.1