[542354234235]

This is such a good analogy. There are some things that bacteria can evolve to deal with, like training yourself to build up an immunity to iocane powder. There are some things they cant, like training yourself to be bulletproof.

[LorenPechtel]

Train yourself, no. Evolve it? Yes. But you'll need an awful lot of generations. Put a robot gun where everything has to come to drink--but it's an air rifle, calibrated to the point of maybe causing injury. Every year you raise the pressure by a tiny bit.

The reason you can't evolve bulletproofness is that it's an overwhelming force. You get evolution when you subject your target to something that only gives a partial kill.