Rune <aut### [at] runevisioncom> wrote:
> There are two passages of which you must choose one. One of them leads to 
> freedom, the other one to doom. Once you have chosen one, you are stuck with 
> it. In front of each passage is a guards. One guard always tell the truth 
> and one always lies. You don't know which does what. Now you must find out 
> which passage to choose by asking the guards questions...

  The vast majority of people pose the problem like that, and they all get
it wrong. That's because that is not limiting the number of questions you
can ask, in which case the problem makes no sense as it becomes trivial.

  In the real problem you can only ask one question, period.

  (Curiously, that also means that having two guards is redundant. One
guard is enough.)

-- 
                                                          - Warp

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