Actually, he does appear to explain &foo() later on, he just doesn't bother mentioning up front that it's completely different.
I think if you consider it as an academic piece, where you're supposed to read all of it and then think, it wouldn't be a bad introduction to perl as it was written in 2003.
Okay, I've read a few of Might's posts, and they're pretty interesting. But it irks me for some reason that nowhere in the posts can I find a date. Am I missing something? Where did you grab this 2003?
I think if you consider it as an academic piece, where you're supposed to read all of it and then think, it wouldn't be a bad introduction to perl as it was written in 2003.