Recent evidence seems to suggest that evolution is not slow and steady. It has been and can be sudden, violent, and rapid. Maybe the modern mind is changing, since so much of what we now are is more cerebral than physical. Whatever is happening, the best investment today is in your own mind. Even with that incentive, it seems some don't want to progress into tomorrow.
Motivation is in short supply in some people.
Other people can't concentrate under critical pressure. Impulsive action could close down all avenues of evolution for some people. Not even Charles Darwin said evolution is easy. Mental stress transfers into bodily stress. Mind stress can affect physical health, business, and personal life.