I'm not happy about this, because as far as I'm concerned the 22nd of July is Pi day (22/7). It's been said that nerds celebrate Pi day on the 14th of March, and engineers celebrate it on 22nd July (because that's close enough).
So why am I writing this trivial post? Because it follows on from something I've been think about since our meeting yesterday (and will be blogging about later). March 14th is a futile (I might say, irrational, if I was in a punning mood) attempt at precision. July 22nd says much more, encompassing what Pi actually is - the ratio of the circumference of a circle to it's diameter.