Ive previously mentioned C4SSs new feature, Mutual Exchange, which began with a piece by Anthony Gregory.
Kevin Carsons reply to Anthony is now up.
I should note in passing that Kevins distinction between reductio ad absurdum arguments and arguments by analogy is very important, as these two are frequently conflated particularly by those invoking Godwins Law. (For a discussion of the closely related conflation of arguments by counterexample with arguments by analogy, see Mike Watkins here.)