View full lesson: http://ed.ted.com/lessons/can-you-solve-the-three-gods-riddle-alex-gendler

You and your team have crash-landed on an ancient planet. Can you appease the three alien overlords who rule it and get your team safely home? Created by logician Raymond Smullyan, and popularized by his colleague George Boolos, this riddle has been called the hardest logic puzzle ever. Alex Gendler shows how to solve it.

Lesson by Alex Gendler, animation by Artrake Studio.

"If I ask you if it's a long way back to earth would you answer ozo? He says ozo. He answered the same as in the question. This means it is a long way. If ozo means yes, imagine the question. "If I ask you if it's a long way back to earth would you answer yes? He says yes. If ozo means no, imagine the question.If I ask you if it's a long way back to earth would you answer no? He says no. So it is a long way back.

Me trying to understand.

Just give them the three artifacts and ask them to pick the right one for each of them. If they reject that, you would know what "no" means.

1:51"… Minus 1 that's 3 Quick math"

Just google "alien riddle walkthrough no commentary"

I didnt know alien language had the same structure as english

trying to figure this out, would something like "what would x say if i asked him this question" be considered a yes or no question? it only has two responses, but its not directly saying an affirmative or negative statement.

phim hong kong trung quoc

phim hong kong trung quoc

TheAuraGuardian made a video with a Pokémon riddle based on this.

Didn't he ask 4 questions?

"You know the language enough to ask several questions, but you don't know if 'Ozo' means 'yes' or 'no'."

KIDS THIS IS WHAT HAPPENS WHEN YOU DON'T STUDY.

Also, isn't it easy to remember which is which?

Just ask if they have 3 eyes. If they lie then its obvious, but they tell the truth its also obvious.

Guys , if the middle one answers ozo ,then there's equal probability of that overlord being all three of them because arr can also tell ozo as ans (because he can lie too) since we get only ozo as ans ntg else so we can't deduce who is who , we can only solve problem if the middle overlord is not arr

If the 3 gods could understand English from the questions why didn’t they just answer Yes or No

I’m not sure if the answer is correct…

1:50 TEU PLUS TEU IS FOUR MINUS ONE DATS THREE QUICK MAFS

1:51 MINUS ONE DAS THREE QUICK MAS

The 'randomness' of Arr was to be defined well.

???????????????????????????? Too confused

2+2 is 4 – 1 that's 3 quick maths

wadahell

too much informations for one riddle

This assumes that the way aliens perceive logic is the same as we do

When you asked the alien in the middle if the one on left is Arr … you assumed that you already know somehow that ozo means true. But you don't know that in the question. So the answer given doesn't work.

Yeah Trinity is confusing.

It's so easy

Alright, I am the artifact repo man. Which one does this belong to, demonstrate how to use it, and fix my damn ship when you're done.

2+2 is 4

-1 thats 3 quick mafs

Darn it. I would rather die in that planet

2+2=4-1=3 quick mafs

OMG I DID IT YASSS😂😂😂

Only three questions were allowed, u asked 4😑

Aauuugghhhhh I still don’t get it whatsoever

You can just ask every one 2 questions ; is it uzu means uzu ? ; is it olo means olo

i did in a COMPLETELY DIFFERENT way and i still solved it

This is why we have Spock.

Why is alien TEE so cute?