Knuth Reward Check

(thomas-huehn.com)

62 points | by Curiositry 2 hours ago

11 comments

  • blatherard 2 hours ago
    Images weren't loading for me, here's a Wayback Machine link https://web.archive.org/web/20260412143311/https://www.thoma...
  • WillAdams 10 minutes ago
    It was a bit more than 25 years ago for me, check #790 for $2.88 DT 33, (143).

    Really need to find another error or point of improvement so as to get the digital account --- I've been reading through TAoCP Vol. 4 Fascicle 7 on _Constraint Satisfaction_, but it's been slow going (though I did find out that it is intentional that he not list beginning of chapter quotes in the index).

  • CurtHagenlocher 2 hours ago
    The biggest shame of my life is that I had one of these and somehow managed to lose it.
    • utopcell 1 hour ago
      If that's your biggest shame then you must have lived a good life.
      • hbcdbff 6 minutes ago
        Or perhaps a life not lived
    • kens 8 minutes ago
      I lost one of mine but Knuth kindly sent me a replacement.
  • ape4 2 hours ago
    The error was saying that "infinitely many alphabets can be generated" but there is a finite number of parameters which have a finite range of values. If Knuth had just written "a humongous number of alphabets" he would be correct.
  • assumed_throwaw 1 hour ago
    I'm surprised we haven't heard of anyone running an AI on Donald Knuth's books to generate the largest collection of checks in existence...
    • WillAdams 17 minutes ago
      He is quite methodical and meticulous --- I doubt that there is much in the training data which isn't already accounted for in his research for his writings.

      I only managed to get one check (for an error and a point of improvement) for _very_ minor points in _Digital Typography_ which was facilitated by my having been fascinated by typography since reading Oscar Ogg's _The 26 Letters_ and his cousin Warren Chappell's _The Living Alphabet_ when I was 8 or so.

  • largbae 1 hour ago
    What a brilliant teaching technique, think of how many people studied his work for bounties that they would never cash.
    • dhosek 58 minutes ago
      I’m on the mailing list where errors related to TeX are submitted and the level of scrutiny behind submissions is truly mind-boggling.
  • janvdberg 2 hours ago
    Awesome! I know the feeling, I have two myself. https://x.com/loginn/status/1367475093719416833

    (Hmm maybe I should also write a blogpost about this)

    • jll29 43 minutes ago
      I also got one for catching DEK out for claiming "Alan Turing broke the Enigma".

      That claim goes to the Polish cryptoanalyst Marian Rejewski instead, of course (https://en.wikipedia.org/wiki/Marian_Rejewski); what Alan Turing and Tommy Flowers did was automate the breaking, which was important because it had to be done again every day (due to the many combinations of configurations of the Enigma).

    • utopcell 1 hour ago
      I bet the mailing cost was more than 0x$2.00 for Knuth.
  • jacquesm 1 hour ago
    Interesting how no other writers in the field seem to have adopted Knuths' strategy to get their books proofread to the point of being bullet proof.
    • chompychop 27 minutes ago
      No other writers have the stature of Knuth. The motivation to proof-read here is not the monetary reward after all.
  • mococa 2 hours ago
    I know a guy (ricbit) who have 4 or more
  • jdw64 2 hours ago
    But what's the most Reward checks anyone has ever held?
    • jacquesm 1 hour ago
      • zimpenfish 55 minutes ago
        Is that necessarily accurate?

        > "These account balances reflect only the rewards for errors reported since the beginning of 2006. Many reward checks were issued during 1968--2005, too numerous to mention here."

        There's 20 years on that chart vs 37 not on it.

        Also that's "account balance" rather than "the most Reward checks" which I take to mean "the most [number of] reward checks" -- there's probably a correlation, yes, but [0] shows a variety of ways where check values are non-constant.

        [0] https://en.wikipedia.org/wiki/Knuth_reward_check#Reward_amou...

        • jacquesm 47 minutes ago
          There is only one person that can rule that out, but since this is their statement on the subject I would take it as authoritative unless there is a better source.

          You probably have a substantial subset of the people on that list on HN, so it might be possible to recover a chunk of the 'paper era'.

          • blltprfmnk 39 minutes ago
            I received two checks in the very early 2000s and my name isn’t on this list.

            For the record I cashed both and have zero regrets. At the time it definitely felt like the right thing to do as I am not into collecting tokens.

      • dhosek 55 minutes ago
        Although that omits the paper check era.

        My guess for the top slot off the top of my head was actually #4.

      • jdw64 1 hour ago
        thanks!
  • evann-dev 19 minutes ago
    [flagged]