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Roots of Unity

Measure Yourself by the Standard of the Capybara

Are you more or less of a fish than this capybara? Image: VigilancePrime, via Wikimedia Commons.

We all know a lot of measurements about ourselves. You are some number of feet or meters tall. You weigh some number of pounds, kilograms, or stone. Your BMI is some number of kilograms per square meter, even though humans are not two-dimensional. You have some number of milligrams of cholesterol in each deciliter of [...]

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