The thing about systems that make them difficult to understand is that they obey rules which make sense, but the outcome can often make no sense whatsoever. By way of an example, I present this article.
Basically, a woman handed a man her baby to use as a Taser shield. Yeah.
I was going to try to build some sort of lesson around this example, but I think it pretty much stands on its own. If you think something would never happen because it wouldn't make any sense, then it will happen. . .and when it does it won't make any sense.