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Oh, yes, of course, whatever we use for this list, we should include a few paragraphs explaining the breadth of possibilities, even down to ""imponderables"" and (perhaps) a brief mention of the really fringe stuff (You know, Berlin Wall, that sort of thing). Basically, make it clear what the breadth is, then present a list of the most common.
If we do this right, it should be possible, maybe even easy, to get this to Featured list (WP:FLC)  talk "