Theory:Doctor Who television discontinuity and plot holes/Cold Blood


 * This story contains a several time paradoxes: If Rory was wipped from time, so he never existed, then who saved the Doctor? Rory was only absorbed by the crack because he died, but if he never existed then he would never have died, so how was he absorbed? If he never existed who convinced them to take Alaya's body down to the Silurians? Who saved Amy from Fancessco? Who convinced Abrosos to trust the Doctor? Who helped the Doctor capture Alaya in the first place?
 * The events prior to Rory's absorption is re-written. Many of the other characters could have taken Rory's place. Events may have also been unwritten or rewritten. As for each question; 1) the Doctor may have simply destroyed the gun as he was about to do with his sonic screwdriver, b, no wait, 2) that's part of the cracks and their mysteries, 3 or c) if Rory wasn't alive she may not have died so they may have taken her down. 4) Amy wouldn't have been there in the first place, e) Amy? She can be pretty convincing, and f (for finally)) Ambrose or her dad could have easily taken his place.
 * It should also be noted that the events in the past being erased do not affect the situation of the present, especially within something displaced in its normal spacial-timey-wimey co-ordinates. Such an example would be Amy's engagement ring.
 * I think only the memorys are erased of ppl/edvents but they still all happend
 * Personally i think its all just part of mysteries of this show, i don't think the writers had intended for us to do all o this deep thinking i think were just supposed to go with it.
 * One rule of time travel is that if events of the past are changed, time-travellers are not physically changed at all and their present situation is not changed (like in Back to the Future II where the world changes around them or they fade etc.) but their mental self may be changed slightly, as witnessed in The Waters of Mars when the Doctor views Adelaide's profile changing from her death being on Mars to her death being on Earth.


 * When the Doctor is pointing his sonic screwdriver at the Silurians, he is pointing it straight at them; from a different angle, it is pointing toward the ceiling.
 * This is almost certainly a production error, not a discontinuity.


 * How come the Doctor didn't get erased from time when he touched the crack?
 * It took some time for Rory to get erased. And presumably absorbing a "complicated time-space event" like the Doctor is a lot harder than absorbing Rory. And you could see and hear that the Doctor was struggling with something the entire time his hand was in the crack (unless Matt Smith was just doing a 2nd Doctor impression for no reason).


 * The Doctor tells the Silurians to wake up in 1000 years. However by that time, humans have evacuated the earth due to solar flares.
 * That could be intentional--let the Silurians have the planet, no conflict necessary (assuming the Silurians can survive the flares even though humans can't).
 * That would make the narration at least a little odd.
 * It's also more devious than what we've come to expect of the 11th Doctor (although for, say, the 7th, it would be perfectly in character).
 * Yeah, shouldn't the Doctor tell them to wake up sometime later than that, since when the humans eventually return to Earth only to find it in control of the Silurians, there would probably be a war.
 * If everyone in Cold Blood passed on the message that they would re-awaken in 1000 yeara, then the humans should have no conflict against the Silurians. Since the humans have found a way to escape the Earth in 1000 years time, they would probably carry on travelling the universe, instead of going back to Earth, so the Silurians have it.
 * In addition, perhaps the point of the Doctor's timing was so that the Silurians (led by their relatively peaceful leader) would wake in time to help the humans find a way of fleeing the planet; perhaps the crisis of both species of Earthling in peril of losing their planet (of which the Silurians are clearly exceedingly fond) will help forge the alliance necessary for the lizards and apes to cohabit (and flee together, if necessary).
 * The Silurians were able to survive the heat near the mantle. They may have the technology to stop the solar flares from heating up the earth. They may also help the humans move underground.