Survival of the fittest is fitting only us, humans, because every existing creature is fit … except ourselves !
When some living forms disappear, they are not replaced by the surviving ones but by new ones. As proved by many like Anne Dambricourt, mutations are not the driver of evolution but qualitative jumps where new species arise.
… « traders are the most mutated human presently » (Rupert Sheldrake at 39:52 in ‘Presentiment: waking before alarms’ on YouTube).
Nature does not like emptiness. it explores the maximum ways possible.
Man satisfies himself with fitting in the rat race by any mutation possible including the Johnny Walker ones.
One don’t find in the wild any pig, dog or cat in their domesticated forms, These breeds have been selected for millennium by natural evolution processes but, what to say about man ???
Man has auto-selected himself the most, man is doing this very adaptation process all the time since he appeared as a distinctive species, for tens of thousands years. His tool for doing so is the natural ability of life to adapt coupled with his reasoning power that multiply it by a huge amount.
What similarities are there between an anglican clergyman and a peruvian chaman ?
When you speak of evolution, turn to mankind and nothing else !
