By way of contrition, I sent the attached note to Don (we had met a couple of times previously -- enough to give me some hope of a response) asking him to confirm or deny. Attached is his response. We followed up with lunch, and he spoke quite approvingly of Stack Overflow. I think the Math people at the time were working Tex in the markup language, and they had been in communication with him as well.
He responded right away:
I have to say that the phrase isn't particular apt, since there obviously exist computer science books less read than TAOCP. It is true that the *ratio* of pages-thoroughly-read to pages-purchased is pretty low for TAOCP, because different people are interested in different pages. But still I like to think that the pages read are so great that the buyers aren't unhappy overall. (Or else they just want their friends to think that they have mastered a lot of tough material, which I must confess is not easy for anybody I know including myself. Einstein said it best: 'Make things as simple as possible but no simpler.' Some theories are inherently unsimplifiable ... we can even *prove* that!)
My favorite related comment is the enclosed ad that ran about ten years ago, when it was rumored that John Grisham was thinking of responding by writing a seven-volume treatise.
Anyway the bottom line is that I'm enthused about sending a memo to The Internet about this particular phrase. The web has thousands of tales that aren't true, about virtually everybody in public life. (Including the story about me and Pixar's CEO.) I *did* say things like 'Premature optimization is the root of all evil in programming' and 'Beware of bugs in the above code -- I've only proved it correct not actually run it.'
I especially like that he marked up my original note and fixed an error in grammar!
I suspect you made a typo with "ave"
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