Great description. I vividly remember the moment that I started to get a handle on regular expressions. I swear there was an almost audible click and suddenly I understood what 5 minutes ago I did not. I was so excited I wanted to stop people on the street I didn't even know and tell them "I can actually write a useful regular expression!" I ended up deciding against that, though. I probably would have gotten smacked. Or arrested. Or both.

In a way, it reminds me of the sort of thing I've run into very frequently when I'm wearing my martial artist hat. There is so much that is out there to know, that the more I learn, the more I find out I don't know. It keeps you humble.
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Kurt