All the ways the pie-loving Internet celebrated Pi Day

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If you live in America, rejoice, for today is March 14—numerically spelled 3.14, which makes it Pi Day! 

If you live in America, rejoice, for today is March 14—numerically spelled 3.14, which makes it Pi Day! 

Pi (π), or 3.14159, etc., is the number you get whenever you calculate the ratio of a circle’s circumference to its diameter. It is also an “irrational” number, whose digits go on forever without repeating. (This makes irrational numbers the exact opposite of irrational people, who do like to repeat themselves. A lot.)

Not all math fans celebrate Pi Day. Some mathematicians say pi is overrated and should be replaced by tau, or 2π, because if you’re a science or engineering type whose job requires you to calculate circles, tau is more useful than pi. Tau Day falls in June, on 6/28. 

Vi Hart, the “professional mathemusician at Khan Academy,” is a staunch tau proponent, popular on YouTube for her math videos, especially the pro-tau video “Pi Is Still Wrong.” Still, Hart celebrated this year's Pi Day with a “Singing Pi Gram,” an a cappella rendition of pi’s first several dozen digits.

(For people in Europe, today is 14 March, or 14.3, which is nothing special. With only 12 months in a year, Europeans can never experience the joy that is Pi Day unless they get a green card and immigrate to America, Land of Opportunity™.)  

Maybe tau does make math and engineering easier, but it also makes delicious puns harder because Tau Day, unlike Pi Day, doesn’t give English speakers the excuse to make, eat, and share scrumptious pies.

And the Internet knows that Pi Day, like every day, is a wonderful day for pie:

Photo via pauladamsmith/Flickr

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Celebrating Pi Day with pies and tweets
Everyone has that special holiday that seems to make the world stop. For mathematicians that day is March 14, also known as Pi Day—where the number 3.14 is more than just a mathematical pillar but a reason to bake a pie.
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