this is to negate the entire sentence and arrive at a tautology. Nobody is a barber, so there is no solution to the paradox. See also Cantor's theorem Gödel's incompleteness theorems Halting problem List of paradoxes Double bind References External links Proposition of the Barber's Paradox Joyce, Helen. "Mathematical mysteries: The Barber's Paradox". Plus, May 2002. Edsger Dijkstra's take on the problem Russell's (Barber) paradox explanation in Python Self-referential paradoxes Bertrand Russell Logical paradoxes