More thoughts on the importance of science in science fiction

Today I was directed to a blog post about how important science is in science fiction using the hideous crime against science example of Beth Revis's Across the Universe, which I blogged about here. (From the sound of it, the blog author may have read my post or someone else's similar reaction to the book.) The blog author asks how important is accurate science really, and is there a line? The rest of this post is based on my comment over there.

I think there is definitely a line. Stuff like f...