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A Gentleman and a Scala

Personal blog · jliszka.github.iomathprogrammingscience

A Gentleman and a Scala is a personal blog at jliszka.github.io about math, programming and science. Since 2013, 7 different Hacker News readers have linked it 23 times, most often “Exact numeric nth derivatives”. The last post was in 2016, but the archive is still widely read.

Visit the blog
23mentions?
7HN people?
2013–2019first – last linked?
Links on Hacker News per year · peak 14 in 2013

Too few sampled comments (2) to say how often HN recommends it.?

Why HN links it

HN readers link A Gentleman and a Scala's traffic post to explain how traffic flows. It argues a lane can pass only about one car every two seconds, so spacing cars cannot end jams.

Summarised by Claude from a sample of 2 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.

Most-linked posts?

  1. Exact numeric nth derivatives
    3 people · 3 mentions · first linked 2013-10-24
  2. How traffic actually works
    2 people · 3 mentions · first linked 2013-10-01
  3. Painless, effective peer reviews
    2 people · 2 mentions · first linked 2013-11-07

What Hacker News says?

  1. FWIW I tried this out, seeing what happens when there are varying average car lengths on the road. http://jliszka.github.io/assets/img/traffic/speed-vs-occupan... http://localhost:4000/assets/img/traffic/flow-vs-occupancy-2... Also added as an update to the article.

    Comment linking /assets/img/traffic/speed-vs-occupancy-2.png

    on “How traffic actually works”
  2. Submitted How traffic actually works as a story · 263 points

    HN discussion
  3. That really isn't the case in high traffic areas: http://jliszka.github.io/2013/10/01/how-traffic-actually-wor...

    Comment linking /2013/10/01/how-traffic-actually-works.html

    on “Can a single car break a traffic jam?”
  4. Submitted Exact numeric nth derivatives as a story · 164 points

    HN discussion
  5. cortesoft · 2016-04-29Recommends
    Every time people try to say we can eliminate traffic if we just leave space in between cars, I think of this great article: http://jliszka.github.io/2013/10/01/how-traffic-actually-wor... TL;DR there is an effective maximum number of cars that can pass through a given point of roadway (about 1 car per 2 seconds per lane). No amount of space-leaving is going to chance that.

    Comment linking /2013/10/01/how-traffic-actually-works.html

    on “Can a single car break a traffic jam?”
  6. Submitted More backwards functions: Unevaluating polynomials as a story · 47 points

    HN discussion
  7. Submitted Painless, effective peer reviews as a story · 23 points

    HN discussion
  8. Submitted Infinite lazy polynomials as a story · 4 points

    HN discussion
  9. Submitted Insertion sort is dual to bubble sort as a story · 4 points

    HN discussion
  10. Submitted The 3 Things You Should Understand about Quantum Computing as a story · 4 points

    HN discussion
  11. Submitted Probability is in the process as a story · 3 points

    HN discussion
  12. Submitted Bayesian networks and causality as a story · 3 points

    HN discussion
  13. Submitted Some impossible functions as a story · 3 points

    HN discussion
  14. Submitted A Frequentist Approach to Probability as a story · 3 points

    HN discussion
  15. Submitted Exact numeric nth derivatives (2013) as a story · 2 points

    HN discussion
  16. Submitted Between order and chaos as a story · 2 points

    HN discussion
  17. Submitted The quantum eraser demystified as a story · 2 points

    HN discussion
  18. Submitted Exact numeric nth derivatives as a story · 2 points

    HN discussion
  19. Submitted The Foursquare Theorem as a story · 2 points

    HN discussion
  20. Submitted Understanding A/B test analysis as a story · 2 points

    HN discussion
  21. Submitted A Programmer's Guide to the Central Limit Theorem as a story · 2 points

    HN discussion
  22. Submitted Painless, effective peer reviews as a story · 1 points

    HN discussion
  23. Submitted Programming with Futures: patterns and anti-patterns as a story · 1 points

    HN discussion

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