Dogmafood writes:
I find it truly astounding how successful organisms are at randomly producing a particular mutation that lends them immunity to a particular randomly appearing pathogen. The odds seem to be so incredibly high.
Since there are
billions of bacteria, all of them mutating (well, not they themselves of course), the odds don't seem that high to me.
Let's also not forget that there might be multiple (many?) different mutations that result in immunity, and that there might be a range of degrees of immunity. It's typically not like
one particular mutation is needed. An attack mechanism can likely be crippled in several different ways.
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