Argue with the best version of their point, not the dumbest. Beating a cardboard cutout proves nothing.

Knocking down a weak version of someone’s point feels like winning and proves nothing, because you beat something they never said. Everyone watching can tell, including the person you did it to. The strong version is harder and it is the only one worth your time, since it is the only one that could actually change your mind.

In your next disagreement, say their point back in a form they would accept before you answer it. If they nod, you are arguing with the real thing.