Panpsychism is exciting. But there are two problems in it. One is the combination problem: what sort of collection of atoms are conscious and what are not. If you propose then that only agents or complex systems are conscious, you are faced with the second problem: the boundary condition. What do you call an agent, and why?

I’m ultimately hopeful that subjective experience will come to be seen as something fundamental. But the difficulty is that we can’t just make up new entities / concepts in the world that don’t agree with current scientific facts. So such a science of consciousness has to be compatible with modern findings of neuroscience and psychophysics.

It’s exciting times! Let’s hope that we’re able to get a grip on this question of why we have this subjective experience of red colour.