Respectfully disagree about monoids! Plenty of cool stuff there, here’s one of my favorites, a diagramming library built around monoids: https://repository.upe

Respectfully disagree about monoids! Plenty of cool stuff there, here’s one of my favorites, a diagramming library built around monoids: https://repository.upenn.edu/cgi/viewcontent.cgi?article=1773&context=cis_papers https://repository.upenn.edu/cgi/viewcontent.cgi?article=177...