One of my personal faves was responding to what struck me as a somewhat unthinking response to the true reality at the time of the destruction of Pompeii and Herculaneum by the 79 CE eruption of Mount Vesuvius, here: <>>22132283 >.
Another addressed common tropes from Wealth of Nations: <>>17965681 >.
I've increasingly taken to responding to highly disinformational or misinformed commentary by simply linking an authoritative rebutting item, occasionally quoting the specific element that addresses the point in question. E.g., <>>33999668 > and <>>27284014 >.
I'll also, when the argument seems to be circling rather than progressing, leave as my last response (if any) a link to a previous comment of mine in the thread, to make clear that I'd already addressed that point.
And much of that is not with the goal of convincing the person I'm responding to directly, but in addressing the wider audience. Though occasionally the former seems to occur: <>>36550938 >.