Theatre· Porto
O Barbeiro de Einstein
**O Barbeiro de Einstein** is a classic logical paradox story in which a barber declares that he shaves all men in town who do not shave themselves—and only those men—leading to the question: who shaves the barber? The scenario, often attributed to Einstein as an illustration of self-referential contradiction (formulated by Bertrand Russell), demonstrates that no such barber can exist, since he wo