Well, given the level of details in TAOCP, and the fact that Knuth wrote a 8000-page draft of TAOCP in a matter of a few months, Knuth is certainly capable of r

Well, given the level of details in TAOCP, and the fact that Knuth wrote a 8000-page draft of TAOCP in a matter of a few months, Knuth is certainly capable of remember the 20 questions, if not more. Still, it's striking, nonetheless.