Pete: I should have thought that the only way you could conjecture a universe from nothing, is to change the definition of nothing. And I see that one of the earliest comments on the Krause video makes exactly that point He's not changing the definition of "nothing" at all. He means precisely what *you* would mean when he says that in a "flat" universe the total energy is zero, and that because of that the universe could actually self-generate from "nothing". He hasn't re-defined "nothing" at all. If you think he has then you're misunderstanding what he's saying.
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