Just don't create a file called -rf. - Larry Wall

Boss: You forgot to assign the result of your map!
Hacker: Dang, I'm always forgetting my assignations...
Boss: And what's that 'goto' doing there?!?
Hacker: Er, I guess my finger slipped when I was typing 'getservbyport'...
Boss: Ah well, accidents will happen. Maybe we should have picked APL.

Odd that we think definitions are definitive.

I was trying not to mention backtracking. Which, of course, means that yours is 'righter' than mine, in a theoretical sense.