Your division of human history in these two parts seems to be quite arbitrary. One could make a stronger case for a pre- steam-engine and post-steam-engine classification...
“Your division of human history in these two parts seems to be quite arbitrary. “
Really?
What scientific wonders were discovered before Christ? What feats of engineering?
The Pyramids? Not really, as there were many previous “piles of rocks” that collapsed and they kind of bungled into doing a proper pile of rocks.
The elan vital of Christianity is that God gave Light to Man and we are no longer blindly following a set of rules
We now have the Holy Trinity and the Holy Ghost in each of us provides for free will and an aspiration to heavenly perfections.
That is what explains the explosion in cognitive function in the last 2000 years.
Who needs ID when you have IC (Intelligent Christ).