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I think using youtube to do research on any topic is a horrible waste of time. If you wanted t look into Musk's lies, there are court filings regarding his businesses or the long history of overselling capabilities of the products of his companies. Getting outraged over videos is only benefits advertisers.

What makes you think these videos were posted by Musk? YouTube is full of all sorts of shit.

The motor pendulum, classically, has probability 1 to be where it is and probability 0 to be anywhere else. It is not so in quantum mechanics, and it makes a big difference for electron. Probability amplitude - Wikipedia

Of course the water freezing itself is not as much of a trouble; the bursting of pipes is the major concern. For the burst prevention, once I was building the plumbing in a remote cabin in the woods and inserted 6mm foam rods as used in filling cracks inside every pipe length in the dwelling. The expansion of ice compressing the closed-cell air bubbles in the foam to prevent burst. The building inspector did not like it only because had never seen such before. More entered to the subject; there is pipe heaters:

When you die, what part of the body dies last? The pupils… they dilate.