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andy_matuschak's profile
Andy Matuschak
Andy Matuschak
Andy Matuschak
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@andy_matuschak

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Andy MatuschakVerified account

@andy_matuschak

Wonder, blunder, salve, solve! Working on tools that expand what people can think and do. Past: led R&D @KhanAcademy; helped build iOS @Apple.

San Francisco, CA
andymatuschak.org
Joined November 2007

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    1. Andy Matuschak‏Verified account @andy_matuschak Mar 30
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      One way to look at memory systems' efficiency is marginal cost: I can choose to "pay" 5m over my lifetime to memorize the answer to a question. I find it generative to flip that around. Say I saturated 10 minutes of review daily—what would that casual practice unlock? (thread)

      4 replies 12 retweets 111 likes
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    2. Andy Matuschak‏Verified account @andy_matuschak Mar 30
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      This framing maps better onto my lived experience. I review during interstitial dead time I'd probably misuse. It doesn't "cost" 10 minutes: it's free, so long as it stays in that timebox. Empirically, I find my reviews stay <10 minutes so long as I cap new questions to 40/day.

      2 replies 0 retweets 20 likes
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    3. Andy Matuschak‏Verified account @andy_matuschak Mar 30
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      If I could add 40 questions a day, that would mean I could add 14,600 questions a year, at the cost of 10 minutes a day! The first chapter of Quantum Country is 112 questions, so that amount to something like memorizing the material from 130 textbook chapters!

      1 reply 0 retweets 10 likes
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    4. Andy Matuschak‏Verified account @andy_matuschak Mar 30
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      But I don't add 40 questions a day! Question-writing, not reviewing, is the real bottleneck for my practice. It's awfully difficult to write good questions, and taxing even if you're skilled at it. I find it also requires a significant context switch.

      2 replies 0 retweets 25 likes
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    5. Andy Matuschak‏Verified account @andy_matuschak Mar 30
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      Of course, lots of people solve this by downloading others' questions, but this seems to rarely work outside basic language learning. Instead, it usually leads to people dropping the practice. More on why:https://notes.andymatuschak.org/z1YhDPWyvzzkC79LFcF4DSTanKpEGpic8bAe …

      1 reply 0 retweets 15 likes
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    6. Andy Matuschak‏Verified account @andy_matuschak Mar 30
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      Enter: the mnemonic medium. By interleaving expert-authored prompts with prose narrative, authors embed those prompts in structure with meaning. https://notes.andymatuschak.org/z5YjgWTaYfhWLrEbysgmDfFRcZ1yxgLeBeZac … Authors supply the prompts, lightening readers' burden.https://notes.andymatuschak.org/z4j3bcyJfBzGdpEoQje9gaVeECfsZFgMEhBNL …

      2 replies 1 retweet 28 likes
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    7. Can Sar‏ @cansar Mar 30
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      Replying to @andy_matuschak

      I’m not sure if you agree but I’ve found that evergreen notes are actually quite transferable, or at least an excellent starting point for integrating into one’s own collection. It the problem with sharing SRS prompts is that they lack context then this makes perfect sense.

      1 reply 0 retweets 2 likes
      Andy Matuschak‏Verified account @andy_matuschak Mar 31
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      Replying to @cansar

      Alas, I don't know enough people who both write and regularly share these to know. I hope that'll change.

      10:09 AM - 31 Mar 2020
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      • Can Sar Conor White-Sullivan
      1 reply 0 retweets 2 likes

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