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I understand why it was applied; it is true that the WL article on Varignon's theorem calls it part of mechanics, which is, I believe, part of the problem. It seems to me that it is more a matter of pure mathematics, which can be applied to mechanics, and also to psychometrics if they are approached through a model based on ae concepts physical analogy. The scholarly articles I see on a fast Google talk about "slipperiness" as a measure of certitude of correctness. This is not my field, so I could be wrong, but I am fairly certain of this reading. I would like to see the concepts better explained however; I can just barely decipher this and usually I love technical stuff like this. I will try to bring the article to the attention of some appropriate wikiproject. I am just a wikignome who showed up because of the unlinked and orphan tags. Elinruby (talk) 11:47, 7 February 2018 (UTC)[reply]