I'm not advocating the "Don is D.B. Cooper" theory—but have you read it online? It's…interesting. I doubt it's legit, and I do see Don's gaze out the window at the plane as being about travel and freedom. But I also wonder if, given the testing of the windows by Don, the plane wasn't a veiled reference by Weiner to…

I really love that he's doing that.

Nothing about Don checking that window, as if to see whether he can leap through it in an episode or two, and end the show falling through opening credit images?