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Barber Paradox (Russell's Paradox)
Posted 09 April 2008 - 12:44 PM
Posted 11 April 2008 - 08:58 PM
Posted 13 April 2008 - 06:56 AM
The paradox is not eternal......so if the barber went one day without shaving, then he could shave himself and be shaving someone who did not shave himself.....even if it was for only a day
But then at the time he shaves himself, he'd be shaving himself...
Posted 15 April 2008 - 11:57 AM
Posted 15 April 2008 - 12:12 PM
took me 2 mins
Posted 29 April 2008 - 06:33 PM
the barber promise to shave anyone who does not shave himself.
and the question is "Can the barber shave himself and keep the mentioned promise?"
so. I think the barber not promise to " NOT SHAVE anyone who sahve himself" right?
so, why the barber would break the rule if he shave himself?
the promise only said that he (the barber) will shave anyone who does not shave himself. so, the other who shave himself still can be shaved by the barber right? include the barber.
Edited by EGG HEAD, 29 April 2008 - 06:33 PM.
Posted 29 April 2008 - 07:00 PM
Not reading all the other posts, and dare I ask if the lady shaves herself - I have two pictures in my mind. one is similar to my old aunt who had almost a moustache when she was in her eighties, and the other is not for this forum!
Barber Paradox (Russell's Paradox) - Back to the Paradoxes
Analogue paradox to the paradox of liar formulated English logician, philosopher and mathematician Bertrand Russell.
There was a barber in a village, who promised to shave everybody, who does not shave himself (or herself).
Can the barber shave himself and keep the mentioned promise?
Edited (better wording?):
In a village, the barber shaves everyone who does not shave himself/herself, but no one else.
Who shaves the barber?
Possibly a non shaving lady barber
Posted 30 April 2008 - 12:06 PM
Posted 05 May 2008 - 04:47 PM
Thus, the barber is female and has no facial hair. She does not shave herself, but shaves everyone else.
The barber promises to shave everyone who doesn't shave themselves:
"In a village, the barber shaves everyone who does not shave himself/herself, but no one else."
If the barber (or anyone else in the village) is a woman (or child) who does not NEED to shave, then they don't shave themselves, which means the barber (man, woman, or child) must therefore shave them - if they need it or not. So the 'barber is a woman/child' exit does not work.
Edited by Steve Luke, 05 May 2008 - 04:52 PM.
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