Michael Hartl and Bob Palais want people to stop using pi and start using their constant tau (or τ). Tau is defined as the ratio of the circumference of a circle to its radius, while pi is the ratio of the circumference to the diameter. Hartl’s argument is that since the radius is a more important number for a circle than a diameter, the circle constant should rely on the more important number.

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My name is Jeff, and I write this blog. I work as an interface designer in Denver, CO. I am also an amateur musician and an atheist.

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