Hi HN, I'm one of the creators. I've been tackling the problem of managing complex business rules for years (especially in fintech), and wanted a lightweight, P

Hi HN, I'm one of the creators. I've been tackling the problem of managing complex business rules for years (especially in fintech), and wanted a lightweight, Python-native tool that was built on a solid theoretical foundation. We built vector-logic (it's on PyPI) and wrote a hands-on guide for Towards Data Science: https://towardsdatascience.com/building-a-rules-engine-from-first-principles/ https://towardsdatascience.com/building-a-rules-engine-from-... The whole framework is based on a theory we call 'State Algebra,' which we co-authored for arXiv: https://arxiv.org/abs/2509.10326 https://arxiv.org/abs/2509.10326 Happy to answer any questions!