I was interacting with an individual on a medically oriented blog recently (more my area) and after I and others (mostly others, as I ran out of time), answered a high volume of relatively unsophisticated questions, and addressed similarly naive assertions, I began to wonder if “the troll” was not an inventive student (amateur or formal). Present examples excepted, but I can picture some “trolls” being students, who have found a clever (sociopathic?) way to get a ton of free education from knowledgeable people. Definitely an evidence free theory. And not in any way a suggestion that the information/education being provided be restricted here or elsewhere. Just the most charitable theory of “trolls” I have come up with.