[Workaccount2]

Humans have a neuro-chemical system that performs operations with electrical signals.

That's the level to look at, unless you have a dualist view of the brain (we are channeling a super-natural forces).

[lll-o-lll]

Yep, just like like looking at a birds feather through a microscope explains the principles of flight…

Complexity theory doesn’t have a mathematics (yet), but that doesn’t mean we can’t see that it exists. Studying the brain at the lowest levels haven’t lead to any major insights in how cognition functions.

[brookst]

I personally believe that quantum effects play a role and we’ll learn more once we understand the brain at that level, but I recognize that is an intuition and may well be wrong.