(waits for the reflexive onslaught of "NOOOOOOOs!" ) I don't mean canon canon -- obviously, the definition of canon is what appeared on screen. And yet, the Blish (and Foster) novelizations were "official". They were the actual episodes in books that said Star Trek by a real science fiction author. So, at least back in the day, how influential were these stories? Did concepts get incorporated into official Trek canon? Did some become official fanon if nothing else? At a time when no new Trek was being made, how much were these adaptations slurped up and the concepts introduced, such as they weren't in the original episodes, accepted as official?