The undeniable fact is that brains provide the material means by which conscious life is sustained. Without brains there can be no human consciousness. But it does not follow from this that we can explain all human behavior in neurological terms alone and that conscious thoughts contribute nothing to our actions. That is a much stronger claim, which goes against the evidence of experience.
The idea that unconscious biological forces drive our beliefs and actions would seem to pose a real threat to our free will. We like to think that we make choices on the basis of our own conscious deliberations. But isn’t all that thinking things over irrelevant if our final decision was already written in our genetic code? And doesn’t the whole edifice of personal responsibility collapse if we accept that “my genes made me do it”?
Small thoughts about big subjects; big thoughts about small things; seeds of thought, scatttered to either take root or not; plus short links to longer work. Microphilosophy is the website of the writer Julian Baggini.