This is basically the reason I visit HN at least once every day. What a fantastic article. Like the author, I've always had a fascination with ND games and especially the Jak & Daxter series (a fascination which only augmented when I learned how much of them was coded in a Scheme and I understood what that meant). Unlike the author, I've never had the perseverance or chops to disassemble the game like this. Props, and thank you!