For Christians (or anyone else) who deny Darwinian evolution.

[DLJ]

...
Naturalistic evolution is like gravity; where there is life, there is evolution, just as where there is matter (or, energy), there is gravity.  Neither are completely understood, but they have both been modeled exceptionally well.

Have you noticed that natural selection has primacy over gravity?

Throw something up in the air and it will fall back down.. Why?

Because all the things that wouldn't come back down were naturally selected against millions of years ago.

QED.