Core scientific theories often sound tautological, yet we keep them around because they lead to useful ideas. The prime theorem of biology is that life comes from life. Life coming from life doesn’t mean that spontaneous generation is impossible. It had to have happened at least once. But it’s so much less efficient than reproduction that it no longer has a chance. Before two amino acids can start rubbing together in just the right way on the road to making Life 2.0, some version 1.0 bastard comes along and eats it. That leads you to the idea of natural selection, evolution, dimorphic sex, and the rest of it.
The prime theorem of computing is that any computer can simulate any other. But for all of the talk about “artificial life”, the two mechanisms are subtly different. Lifeforms compete by turning each other into food. Computerforms compete by turning each other into memes. [Read more…]