Physicalists and critics clash over where consciousness fits in physics
September 29, 2026 · 26 min read
Sean Carroll treats consciousness as a real way of describing physical processes and rejects panpsychism, Sara Walker ties experience to our being extended in time, and Adam Frank argues science has a blind spot that erases lived experience. The split shows that even physicists who agree on the equations disagree on how minds belong in the picture.
The rules, numbers and steps worth keeping in front of you.
- The dispute is philosophical: what is real, and which description comes first.
- None of the three calls consciousness unreal; none endorses panpsychism.
- Sean Carroll: a physicalist; mental words describe physical processes.
- Carroll: consciousness is not an illusion; it is real the way a table is.
- Carroll's test: a concept is real if it improves your grip on the world.
- Carroll: one natural world, many valid ways of talking about it.
- Sara Walker: also a physicalist, but our idea of matter is incomplete.
- Walker: experience may come from being an object hugely extended in time.
- Walker: experience is private because no one shares your thread of time.
- Adam Frank: science has a blind spot for the experience it grew from.
- Frank's example: treating a temperature reading as more real than feeling cold.
- Frank rejects physicalism and idealism; experience is something you do.
- They read quantum theory three different ways and differ on machine minds.
- Everyday physics is not in doubt; the fight is over minds, time, measurement and life.
This is the short form. The full insight has every expert's reasoning, their own words and the sources.