Yahoo News yesterday had a report on what is considered one of the “toughest riddles ever,” a classic paradox involving a barber that may thrill you or drive you bonkers. This is a variation of Russel’s paradox, and there are several ways to solve, or attempts to solve, this depending on how it is interpreted. The riddle is as follows:
There is a village where the barber shaves all those and only those who do not shave themselves. Who shaves the barber?