Welcome to the wonderful world of Ontology, "the philosophical study of being, [...], existence, reality, [...] and the basic categories of being and their rela

Welcome to the wonderful world of Ontology, "the philosophical study of being, [...], existence, reality, [...] and the basic categories of being and their relations". [0] A narrower related field is Taxonomy, the practice and science of classification. I like the "cube rule" as a very coarse grained way of classifying food! Classifications of things can become pretty crazy, in particular when they try to classify very general and dissimilar things (example, the schema.org vocabulary [1]). Now someone should turn the cube rule to an OWL vocabulary so machines too, like we humans, can understand the difference between a hot dog and a salad [2]. 0: https://en.wikipedia.org/wiki/Ontology https://en.wikipedia.org/wiki/Ontology 1: https://schema.org/docs/full.html https://schema.org/docs/full.html 2: https://en.wikipedia.org/wiki/Web_Ontology_Language https://en.wikipedia.org/wiki/Web_Ontology_Language