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Imagine we want to compute the square root of a number n. The basic idea of [*Heron’s method*](https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Heron's_method), named after the mathematician and engineer, Heron of Alexandria, is to find a number g that is close to n and to then average that with the number n/g, which corrects for the fact that g either over- or underestimates n.
Estimating Square Roots in Your Head
Gregory Gundersen
Loss in Judo is more personal than in other sports. Defeat in a sport like tennis feels bad, but defeat in a fighting sport is crushing in ways that most people do not comprehend. My coach liked to say that “at the end of the day, Judo is a fight, and humans respond very differently to losing in a physical fight.”
An Expertise Acceleration Experiment in Judo
Cedric Chin
Pollan proposes a new (and very old) answer to the question of what we should eat that comes down to seven simple but liberating words: *Eat food. Not too much. Mostly plants.* By urging us to once again eat food, he challenges the prevailing nutrient-by-nutrient approach — what he calls nutritionism — and proposes an alternative way of eating that is informed by the traditions and ecology of real, well-grown, unprocessed food. Our personal health, he argues, cannot be divorced from the health of the food chains of which we are part.
In Defense of Food
Michael Pollan
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