Deviations from things that HAD to have been known to the author annoy me. Enless there's an obvious reason for it, it just strikes me as sloppy. If it's one of those "I started this prior the that coming up on the show," it doesn't bother me. So, for instance, if the story was written between seasons, I'll let the Daedelus example go. Since I don't go around rewriting stories because of the show, I'm not going to make others do it.