In a recent bout of speculation I had the thought that Mary Poppins might be a Timelord, considering that her bag (and umbrella?) seem decidedly TARDIS like (bigger on the inside, can fly, etc).
Assuming she isn't actually a Timelord (but if you have evidence she is please add it), is there any explanation for how Mary Poppins' bag worked and how she was able to fly?
My speculations are based off 20+ year old memories of the Disney movie.
The in-universe explanation is "magic - don't ask". Howver, there is some speculation we can do. The umbrella, at least in the film, merely focussed the wind, and enabled her to take advantage of it to move herself about. She had to be taken to "somewhere else", because she was definitively "other".
The bag must have been a portal to a tract of space, not infinite, but large enough for all of her possessions - including a standard lamp. In the film, she does have to explore a long way down in the bag, but it clearly does have a base to it.
The other bag explanation is that it is simply a womans handbag, which, as we all know, can contain twice as much as it appears to on the outside. The maths of this are still obscure.
