Seeing is believing. Yet optical illusions and acid trips make it clear that what we see is a function of what we think and believe. Might perception and experience be a creative response to the world enabling us to live in a strange and unknowable world? Or do they provide a direct link to reality?

Featuring Berit Brogaard, Karl Friston, and Hilary Lawson. David Malone hosts.

From the Institute of Art and Ideas collection.