I think it's important to have a feedback loop, where you're... - John Carmack

"I think it's important to have a feedback loop, where you're constantly thinking about what you've done and how you could be doing it better."

John Carmack

Video Game Engineer American Born 1970 (age 56)

More from John Carmack

"Focus is a luxury for people who can afford to give up opportunities."

"The most important thing is the way you fall."

"Ideas are worthless. Execution is everything."

"It is inevitable that we will leave some bugs for the next guy."