but folks here at LW seem to disagree when I assert that mathematics lacks empirical content.
That's a curious notion. I'm about ready to believe just about anything of the LW commenter community nowadays, though. I've been thoroughly disabused of several notions regarding this site's populace over the last two monhs. <_<
That being said; it might help if I explain how I parse "real" from "exists". To my definitions, "real" covers anything which is a proscriptive restriction on the behaviors of that which exists. "Exists" is anything that directly interacts with something else (or conceivably could / did). I categorize "numbers" in the same 'area' as I do 'the laws of logic' -- they are real, but do not exist. Mostly these things can be treated as "definitionally true"; we define 2 as "1+1" and we define "1" as "a single thing".
(Side note: this neatly resolves the Transcendental Argument for God, by the way. "Resolves" in the sense I am an atheist.)
Often, there are questions you want to know the answers to. You want other people's opinions, because knowing the answer isn't worth the time you'd have to spend to find it, or you're unsure whether your answer is right.
LW seems like a good place to ask these questions because the people here are pretty rational. So, in this thread: You post a top-level comment with some question. Other people reply to your comment with their answers. You upvote answers that you agree with and questions whose answers you'd like to know.
A few (mostly obvious) guidelines:
For questions:
For answers:
This thread is primarily for getting the hivemind's opinions on things, not for debating probabilities of propositions. Debating is also okay, though, especially since it will help question-posters to make up their minds.
Don't be too squeamish about breaking the question-answer format.
This is a followup to my comment in the open thread.