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I wonder if mortality is also evolutionarily disfavored. It seems that viruses like herpes are the most successful. Difficult to detect, relatively mild, so you spread it forever. The same evolutionary pressures seem to fit to computer viruses. They spread longer if undetected
Normally morality is evolutionarily disfavoured, but in this case that's what's so scary about this virus -- it's got the capability of spreading around via pre-symptomatically, sub-symptomatically, or with mild symptoms, or via carriers, and kill later in the cycle...
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