It has also proven that Homo Sapiens Sapiens (Cro-Magnon or Modern man) have not.
Our ancestors arrived here as interstellar prisoners approximately fifty thousand years ago.
Like our ancestors, we are prone to criminal behavior and mental illness.
It is an inescapable part of our basic human nature. It is not our fault, but rather that of deviated genetic code.
The horrors that humans experience on this planet are almost always caused by mankind. Humans lie, steal, cheat, rape, murder and pollute.
When they can no longer exert more dominion over land and animal, they victimize their own kind.
We are a horrible menace to ourselves, to all the creatures of this planet and to interstellar civilization.