It�s 3.14 today, which means it�s time to celebrate all things PI! Or, if you�re Vi Hart (everybody�s favorite recreational mathemusician), it�s time to celebrate everything that�s wrong with pi. Mainly the fact that most of us like to define circles by their radius, not their diameter, so a constant defined as circumference/diameter isn�t nearly as intuitive as one defined as circumference/radius. Watch her make her case here, then check out some of the rest of her amazing videos. I particularly like the snakes one from last week. Then tell your co-workers all about it over lunch�maybe someone will even bring some pie�Go to the original post...