My favorite of those…
It was 20 or so years ago, on the old IMDb forums (IMDb used to have some general interest forums).
It wasn’t actually that it was going well until it flipped - the poster was actually already notorious for arguing in bad faith. But even with that, it was so remarkable that I’ve never forgotten it.
Essentially what happened was, I was arguing “A” and he was arguing “B”. We had gone back and forth for a while, and he had backed himself into a corner, and I moved in for the kill. I wrote a response - a near-perfect bit of argumentation that directly quoted and directly and entirely refuted him, and there was no possible way he could wriggle out of it - then I posted it and sat back, knowing that even someone as dishonest as he was couldn’t get out if it.
Then after a bit, he responded and said essentially, “Then you admit that A is right, as I’ve been claiming all along!”
Yes - he actually, when faced with an argument he couldn’t refute, spontaneously switched sides and claimed that he’d been arguing my position all along, and therefore I had just proven that he was correct and therefore, somehow, that I was wrong.
That’s when I blocked him.
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