Physicalism is far from proven
I'm not a firm believer in dualism (I'm quite a skeptic), but the bias of modern science really has me annoyed. It's nowhere near as simple as "brain creates experience - case closed".
- Materialism currently has no validated model of how the brain produces consciousness at all, despite acting as if they knew it all.
Both leading materialist theories of consciousness (IIT and Global Neuronal Workspace Theory) failed key pre-registered predictions when directly tested against each other. The study is called "Adversarial testing of global neuronal workspace and integrated information theories of consciousness". That's a real crisis.
- Personality change from brain injury is constantly overstated.
Newer research (like Pinto et al., 2017, published in Brain) has debunked the "two minds" narrative of the Split-Brain phenomenon, for example. Patients retain a completely unified sense of self. The glitches right after surgery are just motor misfires (alien hand syndrome) due to damaged hardware that eventually rewires itself.
- Related to personality changes, there's also a huge information and quotation bias.
The dramatic story of Phineas Gage's supposed personality shift after a severe head injury is a poorly-sourced, heavily embellished 19th-century anecdote that's uncritically repeated as textbook fact. Well-documented NDEs, Dr. Stevenson's highly methodical reincarnation research or subjects like Chico Xavier, however, are dismissed as purely anecdotal and thus irrelevant.
- But chemicals / anesthesia / blows to the head / electric stimulation alter consciousness.
That famous argument is often presented as a direct proof for materialism. But why? It's equally consistent with the dualist approach. A radio, to use that analogy, distorts sound once you damage it (or shuts down once you mute it) without producing the music. Correlation between brain state and consciousness doesn't resolve which model is correct.