User:SOTO/Forum Archive/Inclusion debates/@comment-43874324-20200126182327/@comment-6032121-20200126213752

As I understand it, authorial intent. Things that are said to take place in parallel universes or alternate timelines are still "tied" to the mainstream Doctor Who universe because those are actual sci-fi concepts within the Doctor's universe; a parallel universe like in Unbound is a universe that the mainstream Doctor could go to if they wanted by i.e. crossing the Void.

Whereas stuff that is marked invalid by this Wiki for Rule 4 reasons is outright not intended to be part of the fiction of Doctor Who — it's using concepts and imagery from mainstream Doctor Who, but in no way, shape or form is it possible for the Peter Cushing Doctor and the Time Lord Doctor to meet, any more than the Doctor is going to meet Luke Skywalker. It's just a different fictional construct.

At any rate, take anything I say with a grain of salt, what with my not being an administrator on this Wiki, just a regular editor who thinks too much about these things. But I don't think this board is the right part of the forum to be posting this question.

P.S. As it happens, there is an ongoing thread right now to reclassify the Peter Cushing films as… something other than a parallel universe, precisely because (among other things) of the many references in mainstream continuity that the Peter Cushing Doctor racked up over time. It's here if you care to read it.