It may well be there is something else going on in the brain that we don't have an inkling of at the moment.

I was indeed very slow as a youngster.

Well, gauge theory is very fundamental to our understanding of physical forces these days. But they are also dependent on a mathematical idea, which has been around for longer than gauge theory has.

But I think it is a serious issue to wonder about the other platonic absolutes of say beauty and morality.

Intelligence cannot be present without understanding. No computer has any awareness of what it does.

I imagine that whenever the mind perceives a mathematical idea, it makes contact with Plato's world of mathematical concepts... When mathematicians communicate, this is made possible by each one having a direct route to truth, the consciousness of each being in a position to perceive mathematical truths directly, through the process of 'seeing'.

It is hard to see how one could begin to develop a quantum-theoretical description of brain action when one might well have to regard the brain as "observing itself" all the time!