I was watching the 30th anniversary chat between John Romero and John Carmack, and the moderator asked what they thought of being compared to Lennon and McCartney. Carmack's answer pointed out that the Beatles were an "overnight success" only after years of constantly composing and playing live. Similarly, Doom was an "overnight success" only after id Games had made 30 prior games - and like the Beatles, learned how to do it right.
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