If you ignore the sequels, The Matrix is perfect. An astonishing blend of existential philosophy, genuinely groundbreaking cinematography and kick-ass action, it had such a profound impact on culture ...

Mathematicians love a good puzzle. Even something as abstract as multiplying matrices (two-dimensional tables of numbers) can feel like a game when you try to find the most efficient way to do it.

The Matrix Resurrections has arrived in cinemas and on HBO Max – and everyone has questions. Many, many questions. The original Matrix movie was a mind-boggler, and the sequels confused things further ...