Traits are good only insofar as they are well-adapted to their environment. A trait that is vital to a savannah ape's survival may only lead to stress and frust

Traits are good only insofar as they are well-adapted to their environment. A trait that is vital to a savannah ape's survival may only lead to stress and frustration in a modern office worker. Humans have the unique and wonderful ability to deliberately alter some of our traits on an individual level--which itself is a trait well-adapted to many environments.