Er ... Dr. Who canon ?????
I know it's been pissed over from a great height since the "reboot", but surely every 70s schoolkid knew the Dr. only had a maximum of 12 possible incarnations ?
Or did Russell T. Shitforbrains "just decide" it was too inconvenient one day ? Like he suddenly decided the TARDIS was like any other spaceship you can see flying past, rather than dematerialising and materialising ?
When my (then) 15 year old son gave up watching Dr. Who because "it's a load of pants, Dad", I got the hint.
Shame, as there were some genuinely great stories pre-Capaldi.
Of course the most complete Dr. Who story ever was "Logopolis" ....