Comment Huh? (Score 1) 267
I think you miss the point of the penicillin reference. He's using it as an analogy. 'Science' thought penicillin was the wonder drug, and used it indecriminately. Now it's useless against many types of bacteria, which have evolved to be resistant.
The point he's making is that GM could be the same. We might think it's safe now, but we don't know. He just wants a bit of caution.