Today is International Pi Day (3.14, get it?). In fact, it is the only Pi Day this century to be 3-14-15, the first five digits of Pi, often represented by the Greek letter “p” (“π”), the ratio of the circumference of a circle to its diameter, commonly approximated as 3.14159 – though you could take it a good deal further, since the number is wholly irrational and refuses to fall into a repeating pattern.

Naturally, Princeton eats this stuff up. (It is Pi, afer all.) The borough is celebrating with a full day of events.

http://www.pidayprinceton.com/

Albert Einstein, longtime Princeton resident, was born on this date in 1879. “The difference between genius and stupidity is that genius has its limits,” he said. Is he saying, then, that Pi is stupid?

Not so Mr. Spock, who in this episode of “Star Trek,” defeats an evil computer by asking it to calculate to the end of Pi. That Spock is such a trickster. (R.I.P. Leonard Nimoy.)

All together now, as we sing the Albert Einstein Pi Day song!

The tyranny of Pi:

Face it, YouTube is crazy for Pi:

Scariest Pi song?

What does Pi actually sound like?

This way madness lies. Clearly, the possibilities are endless.