Before epilepsy was understood to be a neurological condition, people believed it was caused by the moon, or by phlegm in the brain. They condemned seizures as evidence of witchcraft or demonic possession, and killed or castrated sufferers to prevent them from passing tainted blood to a new generation.
As a materialist, I have never understood the concept or why it is worth discussing unless you are religious and believe in souls or something. Our brains are biological organs, running according to the same physical and chemical principles as everything else. What else is there to discuss?
I feel the same way. We’re obviously governed entirely by physics… Otherwise, what? It also bothers me when people start using quantum mechanics or something as an argument for free will… just because something isn’t deterministic does not mean you have control of the dice!