Physics has dominated our century, but biology may well rule the next. The implications of the Human Genome Project and rapid progress in biotechnology remind us of a more general truth: The most difficult realization about the future is that it can be qualitatively different than the present and past.

Human species will probably not remain intact for even the next thousand years, much less the next ten thousand. Unless we soon halt progress in biotechnology, and don't recapture the ability to tinker with our own genes variants on our Cro-Magnon theme may appear. The solution we offer takes this aspect into an account.