From Ancient Greece to quantum mechanics, or what a Chinese room and a cat have to do with infinity.

From the fine folks at the Open University comes 60-Second Adventures in Thought, a fascinating and delightfully animated series exploring six famous thought experiments.

The Paradox of the Tortoise and Achilles comes from Ancient Greece and explores motion as an illusion:

The Grandfather Paradox grapples with time travel:

Chinese Room comes from the work of John Searle, originally published in 1980, and deals with artificial intelligence:

Hilbert’s paradox of the Grand Hotel, proposed by German mathematician David Hilbert, tackles the gargantuan issue of infinity:

The Twin Paradox, first explained by Paul Langevin in 1911, examines special relativity:

Schrödinger’s Cat, devised by Austrian physicist Erwin Schrödinger in 1935, is a quantum mechanics mind-bender: