They addressed this during Matt Smith's final episode, "The Time of the Doctor." He was on his last regeneration (including his regeneration from Eight to War Doctor, and Ten's regeneration that kept his appearance and siphoned off the rest of the energy into his severed hand) when the Time Lords granted him a new regeneration cycle, just as they did with the Master, right when he was about to be killed by the Daleks.
Then, in the Jodie Whittaker episode "The Timeless Children," we discovered that the Doctor is in fact "the Timeless Child," a being from another dimension who was discovered millennia ago and whose ability to regenerate was spliced into Gallifreyan DNA (but with a hard limit of 12 regenerations). Unlike native Gallifreyans, however, the Doctor appears to have an unlimited ability to regenerate, which neatly gets around the problem of the lead actor/actress changing every few years (otherwise, they'd have to come up with another gimmick to give him/her another regeneration cycle).
tl;dr - It's timey-wimey and spacey-wacey, and best not thought about too intently.
Quite right. To paraphrase Lt. Worf, "Respect is earned, not given away."
More than I believe any Republican, any time, anywhere. But please, feel free to believe that Hillary Clinton is pure evil from the lowest depths of hell if it makes you feel better.
You're talking about the city of Detroit. The article talks about the Metro Detroit area, which means the city as well as the surrounding suburbs (mostly in the counties of Wayne, Oakland, and Macomb, which are the counties that surround the city). The suburbs, by and large, are good, safe places to live, especially Oakland. The city of Detroit has plenty of problems, there's no denying that, but you do a disservice to the entire region by focusing solely on the city.
What is it with Apple engineers and 1000 different connectors? Do they have a dongle fetish?
Wasn't Paul Reubens arrested for indulging in his dongle fetish?
"It's a dog-eat-dog world out there, and I'm wearing Milkbone underware." -- Norm, from _Cheers_