Good gathering of knowledge. Thank you @eco-alex.
I agree. And I agree with my forerunner, and to me, it's all biology and chemistry, next to mathematics and in front of metaphysics. Imagine we couldn't count. Or we couldn't think about biology. But what makes us count? And what are thoughts? You can't see thoughts, like you can't see angels.
But in the end, what counts is that we are all fascinated by nature. And nature is biologic.