Interesting. Reminds me a bit of the parts in Greg Egan's "Permutation City" (fiction) where the protagonist is trying to force simulated bacteria to evolve to

Interesting. Reminds me a bit of the parts in Greg Egan's "Permutation City" (fiction) where the protagonist is trying to force simulated bacteria to evolve to digest a "sugar" analogue that is poison. Hope our real world bacteria don't evolve to do anything useful with xylitol.