No less a mind than Bertrand Russell, of Principia Mathematica fame, was responsible for this paradox, which opened a hole in math. It’s those barbers. The Barber Paradox shows that barbers are not to ...

There is a classic logic problem known as the Barber paradox (itself a variant of Russell's paradox): in a town where the barber shaves every man who doesn't shave himself, who shaves the barber? If ...

How many roads must a man walk down before you call him a man?" asks Bob Dylan in the opening line of his famous song "Blowing in the Wind." The song asks many more "hows" as it goes along, but by the ...

There cannot exist such a barber within the constraints of the scenario as described, because it violates the rules of set theory and creates a paradox. The Barber Paradox is a self-referential ...

A paradox is a statement that on the surface makes no sense at all, yet cannot be disproved. A 'pera-dox' is our sad attempt at wordplay. Paradoxes exist in many academic fields, including physics and ...