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    Robert Sobolewski

    rs.io · Personal blog · on HN since 2011

    Robert Sobolewski writes about learning techniques, especially Anki spaced repetition, along with category theory, statistics datasets, and problem solving.

    Visit blogHN submissions
    ProductivityScience
    What HN says

    HN commenters link his Anki tips and 10,000-card write-up as useful for studying, and cite his post on the effectiveness of checklists.

    Stats for nerds
    16HN people shared it
    43linked in comments
    878story points
    May 2026last shared
    2014people per year2026

    Top posts on HN

    1. 1
      Interesting Data Sets for Statistics
      1 person · 216 points · first shared 2014 · 17 comments on HN
    2. 2
      Why Online Communities Decay Over Time
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    3. 3
      The Science of Problem Solving
      1 person · 120 points · first shared 2014 · 16 comments on HN
    4. 4
      I Hate My Smartphone
      1 person · 120 points · first shared 2011 · 121 comments on HN
    5. 5
      Intuition for Simulated Annealing
      1 person · 67 points · first shared 2014 · 9 comments on HN
    6. 6
      Hard Books Are Overrated
      1 person · 38 points · first shared 2014 · 16 comments on HN
    7. 7
      Anki, Ten Thousand Cards Later
      2 people · 36 points · first shared 2014 · 2 comments on HN
    8. 8
      Why Category Theory Matters
      1 person · 25 points · first shared 2014 · 1 comments on HN
    9. 9
      The Unreasonable Effectiveness of Checklists
      1 person · 20 points · first shared 2014 · Discussion on HN
    10. 10
      C is a Wasteland
      1 person · 15 points · first shared 2011 · 15 comments on HN

    What HN people wrote when they linked it

    • gbaconAug 2018

      I built an Anki deck to study for the FAA instrument written test and the oral exam portion of the instrument practical test.

      Tips and best practices:

      * Effective learning: Twenty rules of formulating knowledge[0]

      * A list of Anki tips and suggestions that [a medical student] wrote[1]

      * Anki Guide for Medical Students[2]

      * How to make high quality Anki cards quickly[3]

      * Anki Tips: What I Learned Making 10,000 Flashcards[4]

      [0]: https://www.supermemo.com/en/articles/20rules

      [1]: https://www.reddit.com/r/medicalschool/comments/4ocdyb/a_list_of_anki_tips_and_suggestions_that_i_wrote/?st=iwlfns6h&sh=945cacd4

      [2]: https://drwillbe.blogspot.com/2011/08/anki-guide-for-medical-students.html

      [3]: https://managingmedicine.org/2013/05/14/how-to-make-high-quality-anki-cards-quickly/

      [4]: http://rs.io/anki-tips/

    • turtleyachtNov 2022

      Oh--just that I couldn't understand the first chapter in Stepanov fully on first reading, so I need to read it again (and again, and again).

      The Feynman reference is

      Well, I asked him, “How can I read it?
      It’s so hard.” He said, “You start at the
      beginning and you read as far as you can
      get, until you are lost. Then you start at
      the beginning again, and you keep working
      through until you can understand the whole
      book.”

      —Joan Feynman, Richard Feynman’s sister,
      recalling a discussion with her brother

      From https://rs.io/feynman-reading-difficult-things/

    • ralmeidaMay 2014

      I've used it for 8 months, and did not observe any negative side effects in the nature of those you mention.

      One thing that I would consider somewhat of a disadvantage of an explicit repetition system is that you need to really take care of how you engineer the questions to match the way you would normally encounter the knowledge they refer to in real situations.

      For example, read the section on "Two-way connections" of this article, also linked somewhere else in this thread: http://rs.io/2014/04/05/anki-10000-cards-later.html

    • lettergramMay 2014

      My friend and I have been using this for years. My friend took it pretty serious this year:

      http://rs.io/2014/04/05/anki-10000-cards-later.html

      It's really useful for courses in college, especially Language, Biology, Chemistry, and Physics for definitions, pronunciations, systems, etc.

      Math and Computer Science is a bit hard since a lot of that requires practice and it takes time to figure out how to structure those cards.

      Anyways, highly recommend them.

    • ppsMar 2017

      Some good resources for beginners:
      https://mullenmemory.com/
      http://artofmemory.com/

      You can't just imagine something and remember it forever, combine mnemotechniques with:
      http://www.retrievalpractice.org/
      https://www.supermemo.com/en/articles/20rules
      http://rs.io/anki-tips/

    • glimmungMay 2026

      "The Unreasonable Effectiveness of Checklists" (https://rs.io/unreasonable-effectiveness-of-checklists/) comes to mind.

      When I was younger I would have though the same. Now that I have more humility and less working memory, I think differently.

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