Comment by anthk

Some languages from T3X target even DOS as CP/M, such as T3X0 itself. OFC with lesser capabilities and being slower on older 16 bit machines, but it's an interesting exercise. And, as I said, s9fes it's very capable, it has Unix syscall and Curses support:

https://www.t3x.org/s9fes/

Now, Klong and MLite can look like toys; but once you grab a piece of paper and a pen and begin jotting down some trivial Math and algo sketches for both languages, even if you are just a self-called "Software Engineer" (in order to be that in Europe you need a Bachelors+Master degree at least, here it would be an Advanced Vocational Trade), your Math skills (and OFC programming ones) will skyrocket.

Also, well, Math and Statistics are great to understand the 100% of papers from STEM. Not just the procedures, but in order to parse the results, Statistics are used to check the validity of some experiment.

Klong https://www.t3x.org/klong/

Intro to Statistics with Klong https://t3x.org/klong-stat/index.html

MLite https://t3x.org/mlite/index.html

And, finally, contrary to LLM's, by using books and solid grounds on both Math and CS you can expect that everything you write it's reproducible. That's it, input always matches the expected output in any case, forever. Not the case for LLM's.