> I feel pain when the atoms in my brain are in certain configurations. Why is that? That's tautological. You feel pain when your brain is in a particular set

> I feel pain when the atoms in my brain are in certain configurations. Why is that? That's tautological. You feel pain when your brain is in a particular set of states. Your brain is in one of those particular states. You feel pain. There's no underlying "why", it's the definition of pain itself. > You simply can't explain that with physics. You can explain the mechanism with physics. What I think you mean is that you can't describe, subjectively, how you feel with it.