- Author
- Posted by SandroG, with replies from many commenters
- Published
- 18 May 2025
- Kind
- Hacker News Show HN thread about a physics code library
- Original
- news.ycombinator.com/item?id=44024055
- Subject
- Space and orbital simulation
- Themes
- Saying it exactly
What it is
SandroG wrote a Python library based on a paper by David Deutsch and Chiara Marletto. The post lists what the library contains and asks for feedback. Commenters respond with questions and suggestions.
What it says
- The poster says the library translates the paper's formalism one to one.
- The poster says the tests mirror every lemma and example, with coverage above 95 %.
- The poster says writing the code clarified the ideas, since the paper is tough going.
- One commenter says the hydrogen example is just a name and a hardcoded energy gap.
- Another commenter says constructor theory has not earned a stable foothold in mainstream physics.
- A commenter suggests modelling tasks as morphisms in category theory.
What evidence it gives
The poster describes the repository and its test suite. Commenters offer critique and one code reading. The thread contains no benchmarks.
Interests and limits
The repository and the paper were not read. The poster is the code's author and wants feedback. Claims about coverage and fidelity come from the post and were not checked. The critical comments are single opinions. The foothold commenter says the doubt is about the theory, not this project.