The fact that the stupid often think they’ve “won” arguments because the more intelligent person walks away when it becomes clear that they’re arguing with a moron.

For instance, there is no point in arguing with someone who claims you’re the intolerant one for not accepting their bigotry or absurd judgement of others. They clearly have not even heard of the paradox of intolerance and almost certainly have no interest in learning. They are simply an idiot and will remain so until circumstances force them to be otherwise.

Walking away at that point, however, leads the idiot to believe they’ve won with their absurd response. It’s the only sensible action, but it’s one that encourages the stupid to remain stupid. I almost wish there were some sort of response that equates to “Your response was not a “gotcha”, you have simply demonstrated that you are too dumb to continue speaking to.”

Unfortunately, saying that directly would only further the argument and be a monumentally stupid thing to do. So the idiocy continues unabated.