A Letter To The Doctor After "The Girl Who Waited"

(No spoilers of consequence.)
Dear Doctor:
I’m not what you’d call a (makes air quotes with fingers) “Time Lord” kind of guy.  More of a “sits on the couch and watches TV” kind of couch potato.  And I certainly can’t claim to be a thousand year-old genius – I’ve just been watching synopses of your various adventures for fifteen years.
However, I should note that even with my limited knowledge of your technology, your history, and the multitudes of worlds you have to face, even I know that you don’t fucking walk through an electronic door when your companions are on one side and you are on the other.  This door will lock shut, forcing you to spend the rest of your adventure rescuing companions.  And if you walk through an electronic door and the TARDIS is on the other side of it, you do realize that you’re going to get separated from your trip home?
Look, I didn’t study at the feet of Rassilon or anything.  I’m just saying: see a door?  Wait a fucking second. Get all three of you in the same room.  Don’t charge ahead.
I know what’s going to happen.  G’wan, use that big ol’ brain of yours and make the conclusion.
Sincerely,
Ferrett Steinmetz