I still don't understand one specific type of behavior (I call it hater behavior) that doesn't make any sense to me. I often see people play the role of a very aggressive protagonist, but usually the role of the antagonist that insists on trying to publicly debate a particular topic that they don't even begin to understand.
They tend to become rather belligerent over time too. Since the science is typically not on their side, their focus of 'attack' tends to be aimed at the individual, and burning strawmen. They are usually forced into a position of pure denial over the actual science. It still doesn't seem to stop the aggressive behavior, in fact it seems to make them even angrier.
If they had some understanding of the topic I could understand them having strong feelings about the topic. Typically however when asked, a lot of them haven't ever even read a textbook on the topic in question, and don't seem to even have so much as a rudimentary understanding of the topic.
Many of them will stick to their guns, and go down blazing, even when they've been repeatedly shot full of holes, and it's been clearly demonstrated repeatedly that they are unable to provided peer reviewed materials to support their own claims.
I just don't quite grasp that behavior. Why even aggressively publicly debate a topic if you've never studied it? I don't get it?