Why we have to get rid of pi for the sake of good math

Pi is perhaps the most beloved number in the world. People devote an entire day to celebrating it; enthusiasts memorize it to hundreds of thousands of places; and it's even pretty useful for calculating the properties of circles and spheres. But pi hides some very important mathematical truths. Put another way, pi is… » 2/02/11 2:20pm 2/02/11 2:20pm