"But of all environments, that produced by man's complex technology is perhaps the most unstable and rickety. In its present form, our society is not two centuries old, and a few nuclear bombs will do it in. To be sure, evolution works over long periods of time and two centuries is far from sufficient to breed Homo technikos.... The destruction of our technological society in a fit of nuclear peevishness would become disastrous even if there were many millions of immediate survivors. The environment toward which they were fitted would be gone, and Darwin's demon would wipe them out remorselessly and without a backward glance."