Kinda unrelated to topic at hand but I always wanted to ask this to other programmers:

Author mentions that he traded sleep for code, and I hear this from so many people but I really cannot understand how well they manage to pull this off. I simply cannot code productively if I get less than 7 hours of sleep or code for more than 8 hours straight, and caffeine doesn’t help me. So how do you people manage to pull this off? I’m really envious that people can code all day long but does it really provide good code? Doesn’t that increase the bug count of the code?