onejayhawk
Afflicted with reason
But I did speak next! You can see my post right after yours!
(only B knows the color of his hat after C yells out)
Finally. That makes you the real Alice.
J
But I did speak next! You can see my post right after yours!
(only B knows the color of his hat after C yells out)
I like how Tim can reason out that entire thing, but not understand what J's actual question was
I like El Mac's question, because it gives them all an incentive to say their own colour if known. Other riddles are all like "you have to do this and you have to do that" and so on: they just lay out the rules and you have to accept them, no matter how little sense they make. But in El Mac's question, you don't need to know that they won't lie, or will for certain always say their own colour ASAP. It's also such a simple puzzle conceptually that you don't have to wonder if they are too stupid to work it all out themselves. It's very satisfying for someone as pedantic as me...
Except if they were four real people at least one of them would have panicked and immediately taken a wild guess.
In these sorts of questions, each participant is invariably a totally rational and highly logical person with excellent impulse control.![]()
Yeah, it's the riddle equivalent of a spherical cow in a vacuum.
My bad. Which of the four in the riddle speaks next and why?
J
And in a probability-based version, when should the guy behind the wall (in my riddle upthread) shout out a guess, and when? (He doesn't know who shouted on the other side, just what they shouted)
Shown above are four men buried up to their necks in the ground. They cannot move, so they can only look forward. Between A and B is a brick wall which cannot be seen through.
They all know that between them they are wearing four hats--two black and two white--but they do not know what color they are wearing. Each of them know where the other three men are buried.
In order to avoid being shot, one of them must call out to the executioner the color of their hat. If they get it wrong, everyone will be shot. They are not allowed to talk to each other and have 10 minutes to fathom it out.
After one minute, one of them calls out.
Who and why?