Barring Adam and Eve – and perhaps her 13 daughters – Genghis Khan is the biologically most successful individual in recorded history: 1 out of every 200 people alive today is a descendant. I read too, that he was illiterate and uncultured and that his empire was born of rage and no grand vision.
He altered the course of human events.
This is human life: accident, luck, chance.
We do not think statistically. We are not rational; we are people. If 10% of all the people who had ever lived are alive today and that proportion will increase as time passes it means that we have been and are a successful species. Logic then is not necessary to survival.
It seems survival only needs experimentation.