Watching the latest Dr Who, as everyone else is focusing on the last-ever episodes of Lost and Ashes to Ashes, and all the loose ends that get tightened, as if scriptwriters were just literary boys scouts, and I wonder: can Dr Who ever really end? I know there’s the idea that Time Lords have a maximum of 12 regenerations, but if they can bring back Davros and the Daleks and the other Time Lords when the occasion demands it, why should that be insurmountable. Canonicity is as tedious as plausibility. Let’s say there’s a climax that leaves the Doctor and his incarnations and various other crypto-selves (including the Watcher and the Valeyard and the Dream Lord), plus the Tardis and all his companions and enemies past, present and future (including those from Torchwood, Sarah Jane, New Adventures and all) exterminated, cremated and broken down to their individual atoms, which are then fired into black holes in 17 different parallel universes where all the return flights have been grounded by volcanic dust. Steven Moffat could come up with 15 ways out of that one before breakfast.
No, it can never really be properly finished. A bit like a jar of Marmite.