I recently wrote a short post on parsers, grammar tools and language-specification for a new group blog that is yet to be announced. (More on that later!)
The point is that it put me in the right frame of mind to stumble on this oddity:
What's that you say? Doesn't look like much, does it?
Well, in the world of mathematical and linguistic specification. There's self-description, context-free syntax, recursion in several flavors, etc.... and then there's a formula that when graphed writes itself out in readable form. That's just INSANE. It's as though God of the Universe, the entire history of mathematical notation and Texas Instruments all conspired to make this happen. Mind sufficiently blown.
Writeup courtesy of ultra-geek Sean O'Conner: