Rupert diologues with American metaphysician John Heil and Australian philosopher of mind Daniel Stoljar, hosted by Sue Nelson.

We think we understand what the world is made of. Atoms and, we are now told, bosons, quarks and leptons. Yet our theory of matter does not explain thought. Do we need a radically new model to explain how material things and immaterial thought are connected? From iai, The Institute of Art and Ideas Philosophy for our times: cutting edge debates and talks from the world's leading thinkers, 2015.