Comment: That map does show

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That map does show

quite a distance the pressure cooker lid must have travelled. I'll leave it to the physicists below as to what kind of force that would take. (My only experience, from childhood, is one that merely blew across the kitchen, fortunately no one its path!) This clip at the Boston Globe shows *something* flying up, though not the lid. Wrong direction, to go by that map. http://www.bostonglobe.com/2013/04/15/gGfFH99UuwAcCjlSg5jE8M...

When we try to pick out anything by itself, we find it hitched to everything else in the Universe.
~ John Muir