...one and all, they came down to the same plaintive cry, "Why do you criticize its lack of science, Dr. Asimov? It's just science fiction."
God, how that stings! I've spent a lifetime loving science fiction, and now I find that you must expect nothing of something that's just science fiction.
It's just science fiction so it's allowed to be silly, and childish, and stupid. It's just science fiction so it doesn't have to make sense. It's just science fiction, so you must ask nothing more of it than loud noise and flashing lights.
That's the harm of Close Encounters: that it convinces tens of millions that that's what just science fiction is