"By evolutionary time standards, the fate of life on our planet has suddenly, and quite abruptly, come to rest on an entirely new form of security and control, based on the machinery of the human brain.

The older, noncognitive controls of nature that have regulated events in our biosphere for hundreds of millions of years, the forces of nature that lifted life from the amoeboid to the human level and created man, are no longer in command.

Modern man has intervened and now superimposes on nature his own cognitive brand of global domination…"

Roger Sperry https://en.wikipedia.org/wiki/Roger_Wolcott_Sperry