Howling:The Reality Bomb would destroy all universes?

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Davros said that the Reality Bomb would destroy all universes by penetrating the time rift at the Medusa Cascade. However, if that were the case, there would be a parallel universe where Davros and the Daleks succeeded, and our Universe would have been destroyed anyway. TemporalSpleen 10:54, April 18, 2010 (UTC)

In the Doctor Who multiverse, the "main" universe is clearly somehow privileged over the others. There's no alternate Doctor in Pete's World, or the Infernoverse, etc. This doesn't make any sense from a physics point of view, but hey, it's sci-fi, they can do what they want.

Also, The Doctor says that before the LGTW, the Time Lords were able to travel to parallel worlds, which presumably means it was also fought across dimensions, not just time, which would mean the main universe is the only one that has a post-LGTW Davros. Clearly, this only works if parallel universes don't work the way they do in, say, the fine-grained version of the Everett-Wheeler interpretation, because if they did, there would be a huge number of parallel universes diverging constantly, including after Davros was unlocked, which would mean plenty of alternate Davroses and Reality Bombs.

Maybe the whole Reality Bomb escapade was a "fixed point in time," which seems to mean to RTD that it goes the same way in every universe in which it exists at all.

Any of these could explain why the multiverse wasn't destroyed. But don't get too bent out of shape trying to understand it. Doctor Who physics is not real-world physics. --166.135.137.95 22:09, April 18, 2010 (UTC)

I always assumed the Cascade was in its own little pocket outside of the Universes.