Well if I have to tell you why we can say animals don't perceive infinity and humans do...
You're are wrong about the date of the most recent common ancestor of humans. It existed just a few thousand years.
Only Christians consider matter as separated from God. Others religions consider matter as a body of a god. In these religions you cannot study matter but you must worship it.
And you're are a positivist if you consider the scientific method the only valid knowledge.