"inlining" means that instead of hand-writing blocks of manually inlined code, you write a function, which can be inlined for you. That's backwards: Carmack ad

"inlining" means that instead of hand-writing blocks of manually inlined code, you write a function, which can be inlined for you. That's backwards: Carmack advocates to avoid writing such functions, manually inlining their code into the caller (with the possible exception of pure functions).