“Aha!” moments

I just had one, reading SICP, looking at the coins code. I'd never really properly looked into it and thought it was kind of complex, but I just spent 15 minutes examining the code and I got it! Tackling an iterative version will be interesting.

ITT your last “aha!” moment

Note: if you don't remember when your last “aha!” moment was, perhaps you need to read SICP. (Or just consider that you really should.)

When my anus was haxed