[Ichneumon]

And what drives natural selection?

It's an inevitable consequence of the interplay between genetic variation and the real world.

It would actually take divine intervention to *prevent* natural selection from occurring any time heritable phenotypic variation is present in a population.

[Wormwood]

It would actually take divine intervention to *prevent* natural selection from occurring any time heritable phenotypic variation is present in a population.

Brilliant point.

Which will be ignored, as usual.

[b_sharp]

Selection actually slows down the variation. Without it variation would take off resulting in all sorts of unforeseeable consequences.