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Tagged data in Haskell (SICP 2.4.2)
June 24, 2026
We read a little part of SICP, the wizard book, and apply it to Haskell. Then we talk system robustness and liveness probes.
Entropic Thoughts Premium Newsletter #13-2
Premium post · June 19, 2026
A sprawling newsletter covering computers, children, health, and a game that allows itself to be narratively complex.
Entropic Thoughts Premium Newsletter #13-1
Premium post · June 18, 2026
A sprawling newsletter covering computers, children, health, and a game that allows itself to be narratively complex.
Lean, not backpressure (plus what congestion is)
June 17, 2026
We look at what Lucas Costa does to rein in code-generating robots, and learn where we can learn more about similar techniques.
LLMs write almost good code
June 10, 2026
I present a brief case study of when the LLM made things more complicated than necessary, and then we practice our intuition for risk sizing in betting.
More keyboard help! And Formula 1 winners from qualifying
June 3, 2026
I ask you again for help in completing the keyboard survey, we look at how to determine the effect of qualifying on winning a Formula 1 Grand Prix, and learn how much of a Fortran program is assignment.
Keyboard help! Stock market returns, and confidence intervals
May 27, 2026
I would like your help measuring a couple of your keyboard properties. After that, you can learn about what returns to expect from the stock market, and how to extrapolate a standard deviation from just two values.
Pythagorean addition in the head! And other things in the head
May 20, 2026
We learn how to quickly compute the combined variation of two processes without having to go through variance explicitly. We learn a fun technique to test situational awareness e.g. in pilots.
The Berkshire buff and fake contests of skill
May 13, 2026
We look at what it took to get article previews into the RSS feed of the main Entropic Thoughts site. We analyse the Henley Royal Regatta statistically. We get skeptical about fake contests of skill.
The best fizz buzz is monoidal
May 6, 2026
Learn about how to compose a fizz buzz that is extendable and contractable.
Entropic Thoughts Premium Newsletter #12
Premium post · May 3, 2026
Hello! If this newsletter reads strangely or vontains odd typos, it is because it is typed on a new, fascinating keyboard. Read on to find out! New in my...
Understanding systems and parametric polymorphism
April 29, 2026
We learn about private tutoring, learning, and what makes parametric polymorphism different from ad hoc polymorphism.
Spaced repetition beginner guide and separating projectiles
April 22, 2026
We learn what's important for practicing spaced repetition, and then what's important for ballistic projectiles that separate into two parts.
OOP in Ada and OODA in Boyd
April 15, 2026
We learn a little about classes, encapsulation, inheritance, and memory management in Ada.
Your math proficiency, visualised
April 8, 2026
We take a look at the results of the maths survey you have been patiently responding to in the past three weeks. Then we learn a tiny bit of differential equations together.
MVC is a mistake, more math questions, and colours
April 1, 2026
MVC is very popular, but since it draws module boundaries along technical concerns it is a bad way to do modularisation.
Entropic Thoughts Premium Newsletter #11
Premium post · March 30, 2026
Notes on fully remote work, forecasting, book writing, and then a dump of 14 or so interesting links.
Long live lines of code!
March 25, 2026
We look at how lines of code is a useful measurement, then I ask you more about your maths abilities, and we learn to combine studies that are not individually significant.
LLMs are not getting better, SQL in Haskell, and maths!
March 18, 2026
We note an oddity in the data on how often LLMs write mergeable code, learn how to write complicated SQL in Haskell, and then talk about maths for a few seconds.
Rebasing magically, banner images, and escalating failures
March 11, 2026
We learn a little about Magit, the truly magical git interface that also teaches you git. Then we deliberately choose to make a problem works.
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