Earlier quoted context omitted.
You're at least partially confusing individual survivability with group survivability. Absolute cowardice, while beneficial to an individual, is ultimately so problematic for the group that it will result in everyone's death. Dumbly repeating procedures that are known to work without analysis will not only cause stagnation, but also likely cause industrial and environmental collapse unless a system is so tightly cont…
"Absolute cowardice, while beneficial to an individual" If this were actually true then evolution would go ahead and make everyone absolutely cowardly. Evolution works because traits that are helpful to an individual become more common; because the individuals with those traits reproduce more. Nothing stops evolution going down paths that are bad for the species. (Of course, if it gets so bad that the species goes ex…
It depends on what you mean by helpful. If you mean helpful in helping them live longer, then it is patently false. Look at peacocks feathers as one famous example.
In any species which require two to reproduce, you also have to be able to attract a mate (generally mostly on the male side), and that may require bravery, willingness to make expensive displays of power, and all kinds of other things that may go against the best way for the individual to survive.
Similarly, in a species that produces few off spring, those members also need to help ensure the off spring survive. This may involve charging into fights you could have run from so your off spring can run, searching for far more food then you need for yourself possibly at great risk, etc. In short again other traits that may go against the individuals personal survival.
(edit: spelling)