Logical
Card Paradox (Jourdain's Paradox)
A card with text on both sides creates a paradox
Overview
A two-sided card paradox that extends the liar paradox to multiple statements.
Side A: 'The sentence on the other side is true.' Side B: 'The sentence on the other side is false.' If A is true, B is true, making A false. If A is false, B is false, making A true. Circular contradiction.