a thought about Science Fiction

… put in a seperate post, because it gets confusing when you mix up subjects in blog posts. On second thoughts, cross-posted from my personal blog.

A while ago, everyone was discussing the boundaries between Science Fiction and Fantasy. I don’t know that anyone got a satisfactory answer out of the discussion, but just recently, I was wondering: what is the boundary between *some* space opera and hard SF?

Where does hard SF stop being hard SF and become something else?

Any opinions?