Three equally-skilled logicians sit in a circle. A hat is placed on each of their heads. Each logician can see the hats of the two others but not his own.

They are now told that:

1) Each hat is either white or blackand are invited to deduce the colours of their own hats.

2) At least one hat is white

In fact, all three hats are white and it isn’t long before the three of them simultaneously announce, “My hat is white.”

How did they deduce this?

Achilles & the tortoise

The surprise exam

Newcomb’s problem

Newcomb’s problem (sassy version)

Seeing and being

Logic test!

Philosophers say the strangest things

Favourite puzzles

Books on consciousness

Philosophy videos

Phinteresting

Philosopher biographies

Philosopher birthdays

Draft

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