Uploaded April 2026 | Updated September 2026, 2 weeks ago

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Alex O’Connor has posed a striking challenge to physicalism: if all mental states are just brain states, then where exactly is the triangle when he imagines one in his mind?

In this short film, leading philosophers and neuroscientists come together to respond.

Featuring insights from philosophers like David Papineau, Ned Block, Ken Williford, Frank Jackson, and Richard Brown, alongside neuroscientists Anil Seth and Karl Friston—one of the most cited neuroscientists in the world.

Together, they explore whether the mind can truly be reduced to the brain, and what Alex’s challenge reveals about the nature of consciousness.

This video is part of a larger project defending physicalist theories of mind.

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