jw004 wrote:
"The more I think about it the more complex the application of evolution becomes for me."

Why? It is amazingly simple. This has absolutely nothing to do with survival of the fitest as though fitness is some static quality.

An essential element of fitness is adaptability. Can you survive climate change? Can you survive a new disease organism? Can you survive a new predator? Can you survive disappearance of your primary food source?

Humans fail on almost every measure of fitness except for that of adaptability. No beef ... we eat fish or foul. No sunshine ... we wear the skins of others. No claws ... we make knives and spears.

This is not complexity ... this is the essence of simplicity.

DA Morgan