Archive for Sewell Wright

Do Pathogens Time Travel?

Posted in Evolution, HIV, Influenza with tags , , , , , , , , on January 12, 2010 by Rob Wallace

Evolution arises out of grave failure. Natural selection requires large and variable populations comprised for the most part of organisms whose designs fail to match their present circumstances. Any design matched right is in the meantime still subject to chance destruction occurring across spatiotemporal scales.

So strict engineering optimization is embodied in no organismal design, contra religiosos and radical adaptationists alike. Nor does it reside in the process of selection: every species eventually dies out–by maladaptation, stochastic extirpation, or an external force (say, a large meteorite in yo’ face).

And yet biological life began early on Earth and continues on four billion years later, and will do so in one form or another after the present climate collapses or we nuke ourselves senseless.

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