He was dead between Last of the Time Lords and End of Time, and he never had a fully working TARDIS before that, so it must happen after he gets sucked into the Gallifrey Time Lock at the end of End of Time Part 2. Presumably he leaves Gallifrey when it escapes the time lock/pocket dimension/wherever it is. Has…

Oh, of course. I'm all for the Master wearing ridiculous disguises.

What is "the same character with different personalities"? What does that even mean? Obviously the Doctor is the same *person* and has the same *memories* and has certain of the same *values* ("never cruel of cowardly," what have you. Since many of the writers are the same, and aren't necessarily writing for any…

I mean, sure, but we know it's really just that the Master loves ridiculous disguises, right? I mean, let's say he's not disguised - is Bill really going to think that this man she meets out somewhere in space, who knows when, is actually the vanished/dead former Prime Minister Harold Saxon? (Do people remember the…

I rather like The Sound of Drums. The other Simm Master episodes from the Davies years are…not good.

The final costume was both a) the original Cyberman costume from The Tenth Planet (of course), but also b) a perfectly logical development of the proto-Cybermen costumes we'd seen all episode, and a plausible transition point between those and the metal Cyberman suits we're more familiar with.

If nowhere else, it's totally plausible it happened sometime between Hell Bent and Husbands of River Song, no?

You realize that the Master and Missy, who has been a major recurring character for the last three seasons, are the same person, right?

True. But even ignoring Hartnell, it's still hard to say that, say, Pertwee and Baker are really playing the same character. Compare Baker in Terror of the Zygons to Pertwee in, say, Invasion of the Dinosaurs or Planet of the Spiders. Here we clearly have the same show - the same world, even, far more than we usually…

The Whomobile was apparently Pertwee's personal car, and he used to drive around in it after he left the show.

Super cool that they got a mother-daughter pair to play the two versions of Vivian. One of the only times I've seen where the two actresses actually look like they could be the same person 35 years apart.

Ah, but how long did it take for the Cybermen to go up the elevator?

TV continuity made sense except when it didn't. Dalek and Cyberman chronology is hopelessly confused.

I'll say I rather enjoyed "Dinosaurs on a Spaceship."

If you showed "An Unearthly Child" and "City of Death" to people who'd never heard of Doctor Who before, is there anything other than the TARDIS and the theme song to even suggest it's the same show, much less that Hartnell and Baker are playing the same character?

The idea that William Hartnell, Patrick Troughton, Jon Pertwee, and Tom Baker were in any respect even attempting to play the same character is ridiculous.

But that would conflict with Timewyrm: Exodus, the classic New Adventures novel!

Oh yes, of course, but the original suggestion was that this was his plan from the very beginning, which would require him to recognize Missy before they even send anyone to pick up Bill.

The original Who built quite well on continuity? Like how they had three different, totally inconsistent, versions of Atlantis, two of which were written by the same writers (Sloman and Letts in The Daemons and The Time Monster)?

I think he dies in Curse and is then revived. Amy's Choice and Doctor's Wife are more fantasy sequences, yeah.