Re: The reason for the traveler in the blue eyes/ brown eyes problem
First I would like to comment that in this particular example not everyone leaves, just the ones with horns (doesn't make much difference but still)
It seems that the stranger provides additional information by letting the last horned guy in the chain of assumptions know that he has horns, but I can't quite pin down how exactly it is that this is new information.
I've spent roughly 7 hours thinking about this subject just in the last couple of days, and probably some more back in that original thread 8 months ago; and still can't quite get a "feeling" of understanding for the solution.
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