Okay, so here are our options:
1. David Tennant is the Fourteenth Doctor because the Jodie Whittaker's Doctor regenerated into him.
2. Ncuti Gatwa is the Fourteenth Doctor because Ten3 does not count.
3. Sacha Dhawan is the Fourteenth Doctor because Jodie Whittaker's doctor regenerated into him.
4. Jodie Whittaker is the Fourteenth Doctor due to the existence of the War Doctor.
5. Peter Capaldi is the Fourteenth Doctor due to the existence of the War Doctor and the time David Tennant regenerated into himself.
6. Matt Smith is the Fourteenth Doctor due to the existence of the War Doctor, and the time David Tennant regenerated into himself, and Jo Martin’s Doctor.
7. David Tennant is the Fourteenth Doctor due to the existence of the War Doctor, and the fact that he regenerated into himself, and Jo Martin's Doctor, and the existence of TenToo.
8. TenToo is the Fourteenth Doctor for the above reasons.
9. Donna Noble is the Fourteenth Doctor for the above above reasons.
10. Both David Tennant and Ncuti Gatwa's Doctors' true numbers are unknowable due to the existence of The Timeless Child.
11. Both David Tennant and Ncuti Gatwa's Doctors' true numbers are unknowable due to the existence of The Timeless Child, and the uncountable amount of times The Twelfth Doctor died and was reborn in Heaven Sent.
12. Both David Tennant and Ncuti Gatwa's Doctors' true numbers are unknowable due to the existence of The Timeless Child, and the uncountable amount of times The Twelfth Doctor died and was reborn in Heaven Sent, and all Doctors seen in noncanon materials are actually canon (Peter Cushing films, Scream of the Shalka, Curse of the Fatal Death, etc...)
13. Both David Tennant and Ncuti Gatwa's Doctors' true numbers are unknowable for all of the above reasons and also because pseudo-Doctors such as The Valeyard and The Dream Lord are also The Doctor.
14. The above is true, but The Doctor is simply a title, and anyone who claims to be The Doctor is also The Doctor. Jackson Lake is The Doctor. Clara is The Doctor. Missy is The Doctor. Graham is The Doctor. Every actor who has played The Doctor are also The Doctor.
15. The above is true, but due to The Egg Theory everyone else is also The Doctor. We are all The Doctor.
16. None of the above is true because no Doctor after the Revival is canon.
17. None of the above is true because no Doctor after the First Doctor is canon.
18. None of the above is true because there is no Fourteenth Doctor. The number was skipped for some reason.
19. The numbering system is flawed and useless to current canon, and we should switch to identifying Doctors by their actors, as we do with The Master. (Example: Hartnell!Doctor)
20. The above is not true because we would still need to find a way to differentiate the 3 - 4 Doctors played by David Tennant.
21. All of the above is technically true, and Russell T Davies should put it up to a poll and see who wins, and we must all commit to the democratic vote.
