I'm curious, was anyone else aware of cooperative game theory, before I mentioned it here?

I had vaguely heard of it and the main result you presented, but I didn't find it very interesting - and I still don't, even after your post. (The black hole material was much more interesting.)

In comparison, the first time I read about the Prisoner's Dilemma and the Tragedy of the Commons, my reaction was: 'this is amazing! It provides a new way to look at just about everything - littering on sidewalks, war, traffic & SUVs, cheating on taxes...' For a year or two, I saw everything through that lense.