Pssst all categories, including ones used by scientists, are made-up "constructs" defined by the intentions of the people categorizinghttps://twitter.com/gogreen18/status/883906090781384704 …
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It's just that both systems measure the same thing, yet one system is dramatically more difficult to teach and use. Feet and inches=silly.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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