Can a cat be both alive and dead?

Achilles – or the tortoise?

Can a machine
be truly intelligent?

Can you fit an infinite number of guests in your infinite hotel – even though it is full?

How can you age more slowly than your twin brother?

What would happen if you went back in time and shot your grandfather? That might be better than if he came forward in time to shoot you?

The UK’s Open University explains six of philosophy’s great paradoxes – in one minute each – delightful.

Hat tip – <http: />Creativ.co