OK, gang: if you're using "near equal temperament" or "mostly equal
temperament" or "equal temperament but a flat fourth fret" or "equal
temperament with flat A strings," what you're using is "unequal
temperament."
I suppose the process many of us actually use is backward from the
historical one: we start with ET and "temper" it. The result is no
more "equal temperament" than fifth-comma meantone is "Pythagoran" or
"just."
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