The idea of studying the bumps on people's heads to understand their personality is often held up as one of the dumbest mistakes ever made in science... But the story of phrenology is a little more complicated than that.

Will tells Rod why!

The Wholesome Show is Rod Lamberts and Will Grant, proudly brought to you by the Australian National Centre for the Public Awareness of Science!

See omnystudio.com/listener for privacy information.