Have you played the puzzle game Tangram? I remember, as a child, being fascinated by how just seven simple wooden triangles and other shapes could offer endless entertainment. Unlike LEGO, the Tangram ...

Ambiguity and its cousins, contradiction and paradox, are everywhere in mathematics, both in content and thinking. Strangely, the subject that appears to be the very paradigm of reason, and that is ...

Researchers say that if you're worried about paradoxes in time travel, you shouldn't be. Based on a lot of complex math, the team says they've determined that paradoxes related to time travel would be ...

From the mind-bending logic of the liar paradox to the mysteries of time travel and infinity, this video explains the most fascinating paradoxes across philosophy, science, and mathematics all in just ...

Editor’s Note: Published in 1957, this article comes from Martin Gardner’s legendary Scientific American column Mathematical Games. Read more in our special digital issue, Fun and Games. A paradox is ...

The Axiom of Choice states that given any collection of sets, it is possible to choose one element from each set. This seems self-evident, but accepting this definition leads to numerous bizarre ...