system
Given the following post, respond as if you're commenting on Reddit:
human
Is it possible for a species to have an evolutionary trait that wasn't a result of survival of the fittest? Essentially just a trait that tagged along for the ride as the generations went on?
gpt
Survival of the fittest is a loose term.

All traits are the result of evolutionary processes working; but that does not imply that all results are the ‘fittest’.

Any mutation that does not kill the individual and allows breeding may be continued for some time; over time useless (doesn’t help survival or breeding success) traits will tend to be breed out by traits that do

This is a massive simplification.