A few unexplained heart attacks and the deaths are dealt with as well. The obvious defence mechanism is that the mind skips the whole experience so nobody remembers any of it. Once you remove the memory of the Dalek invasion fleet, the whole experience from the stealing of Earth to its later return is unlikely to make much sense to people. This is difficult to say and, to be honest, I’m not certain myself. Hang on, if people don’t remember the Daleks, what did people think happened during The Stolen Earth?

Hence nobody remembers them – resetting Russell T Davies’ decision to have the people of Earth know about aliens (and perhaps retconning every continuity error ever). Flesh and Stone pretty-much states that the Daleks from The Stolen Earth (and the Cybermen from The Next Doctor) are eaten by a crack and so removed from time. Some people seem to think Amy has forgotten the Daleks because she was near a crack as a child, so Rory should still remember them. Why did Amy and Rory not remember the Daleks? The Doctor has touched other versions of himself in all the multi-Doctor stories and has never exploded. The short answer is that this never happens to the Doctor. At no point in little Amy’s timeline will she become big Amy, hence no discharge. An equally valid question is why this doesn’t happen to the Doctor when he hugs himself. Big Amy is from the universe with stars and little Amy is from the one without. In the case of Amy, big Amy and little Amy are not the same object. Essentially the idea is that if a single item at two points in its timeline touches, a lot of energy is released. Why did the Dalek not kill the Doctor?įor those who don’t know, this refers back to Father’s Day (and even further back to Mawdryn Undead). The implication is, therefore, that the wall is put there by whoever is controlling the TARDIS to stop that happening. As the TARDIS is beginning to explode, the Doctor tells River that if she leaves the engines will stop. Why did River run into a wall when she tried to leave the TARDIS?Ī good question. The universe is now much smaller, taking up essentially only the Earth-Moon area, so time and space travel is much, much less complex. The Doctor kindly explains this in a throwaway line. Why was the Vortex Manipulator so good at time travel if it’s meant to be crap? The Doctor chose not to open it in The Pandorica Opens because he wasn’t certain what was inside, not because he couldn’t open it at all. They only need to be secure from the inside. That’s the thing about prisons: you have to be able to open them from the outside to put someone in. How come the Pandorica was so easy to open? And that episode shows that the rules can be broken, but doing so tends to have serious consequences. As Waters of Mars makes clear, they are not physical but legal constructs, designed to stop people playing silly buggers with the time-stream. In this circumstance it’s understandable that the Doctor throws the rulebook away: he knows that if he screws this one up, then it can’t really get any worse than, er, the universe having been destroyed. More generally, after the loss of the Time Lords, the rules of time seem to be rather less well enforced than they were. Essentially the Doctor is crossing his own time-stream and this is deeply frowned upon because of the trouble it can cause if it doesn’t work – look what happened in Father’s Day!īut, by this point, the universe has collapsed and they are all doomed. But Day also shows its weakness – one change and the whole timeline goes up in smoke.

Space wall papers crack in space time