Is it evolution when a human develops a resistance/tolerance for alcohol and drugs? We develop resistances just like the bacteria. That is not what Darwin had in mind I'm sure. He was looking at the whole of geologic time so to speak, not single generation adaptation.
Cheryl. Haven't seen you around here much. Please think about this: resistance and tolerance are two completely different things. While we may eventually tolerate drugs so that they become ineffective, no genetic change has led to that tolerance and you do not pass it on to your offspring.