If you’re reading this post, chances are, you’re a geek. Maybe there’s just a little geek in you (the one who knows what a hard drive is but has no intention of ever installing a second one in their computer), or maybe you’re a full blown geek (well, you built the computer you’re currently on or could build it if you had the time/money). No matter what kind of geek you are, you can still recognize the greatness that is the most irrational number ever, Pi. Please, please, please tell me you know why we’re celebrating Pi today? Hint: It’s March 14th. March is the 3rd month of the year. 3.14 is Pi, 3-14 is the date. Get it?

It just so happens that this wonderful day is also the birthday of one of the smartest people to ever live, Einstein himself! Whether you call Pi 3.14, 22/7, or 3.14159265, I want you to take a few moments to reflect on how helpful Pi really is. Just think, with Pi you can find the areas and circumferences of circles. . . and some more things, obviously. While it’s a bit to late to grab your T-shirt for this year’s Pi Day, there’s always next year. Think Geek has a rather geeky T-shirt that a first seems to be just your regular old Pi symbol, but if you look closely, you can see that it’s actually made up of the first 4,493 digits of Pi. That should be enough Pi for everyone, and it’s only $15.

3.14159 26535 89793 23846 26433 83279 50288 41971 69399 37510