you and I and most people with an ideal environment could learn geometry and trig well enough to teach it at a college or high school or something. A working level math education

In comparison to ground breaking, paradigm shifting high level math, that isn't comparable.

If Einstein is considered extraordinary, could anyone become extraordinary under ideal conditions?

I imagine that the vast majority had lots of factors stacked against them and chaos in their lives rather than they studied adequately and still failed to grasp the material and get in.

If we're looking at causes outside scholarly performance, it's easy to argue that a family might not make as good decisions for their child as a higher intelligence family, resulting in more challenges for their kids.

I guess my argument is that it's not a complex matter.

Sometimes it's just about having the experience and things look complicated from the outside.

In my experience, what someone think is easy, others think it's hard. When you say some things are complex and others aren't, it's that compared to the average Joe or compared to your comprehension skills?