It was finally the weekend! After my long mathematics presentation, I came home to watch my favorite tv show, Person of Interest, to de-stress. Surprisingly, the episode was about the most famous mathematical constant, **pi (π)**, *equal to the ratio of a circle’s circumference to its diameter, commonly approximated as 3.14159.* **Mr. Finch** (the main character) acted as a substitute teacher and wrote on the chalkboard **3.1415926535.** He then asked the students, “What does this mean?”

I answered the question in my mind, thinking, “*If I have a bicycle tire with a diameter of 1, then one full revolution of the bicycle tire would travel a distance equal to pi.*” However, in the show, no one answered. Then Mr. Finch responded to the question himself, saying:

Pi, the ratio of the circumference of a circle to its diameter —

3.1415926535— is just the beginning. It keeps going forever without ever repeating, which means that contained within this string of decimals is every other number;your birth date, the combination to your locker,your social security number, etc. It’s…