I've deleted my post as I think it was incorrect. Having worked with Carmack's code, two things I liked about it: it always came across as being the first obvi

I've deleted my post as I think it was incorrect. Having worked with Carmack's code, two things I liked about it: it always came across as being the first obvious thing that popped into his mind, and yet it was always somehow the right thing. Sadly, I myself can only manage one out of two.