If LessWrongers have solved the problem of determining what counts as instantiating a computation, I'd like to hear more.
Sure thing. I solved the problem here and here in response to Paul Almond's essays on the issue. So did Gary Drescher, who said essentially the same thing in pages 51 through 59 of Good and Real. (I assume you have a copy of it; if not, don't privately message me and ask me how to pirate it. That's just wrong, dude. On so many levels.)
I declare this Open Thread open for discussion of Less Wrong topics that have not appeared in recent posts.