This sounds like presenting an argument for a thing from shared premises - the most ordinary form of trying to convince someone.
I don't think arguing from shared premises has ever been as "ordinary" as calling one's opponent a witch, a hater of truth, and a corrupter of the youth.
For one thing, arguing from shared premises exposes the arguer to the possibility that those shared premises might, when justly examined, lead to the opponent's conclusion.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.