Re 2.5) 2.6) and 2.7) In order to categorize things that enables you to communicate the idea, you need a common denominator that is universal & neutral enough t

Re 2.5) 2.6) and 2.7) In order to categorize things that enables you to communicate the idea, you need a common denominator that is universal & neutral enough to rely on. I think there's on place where this work is already done for you, it's wikipedia ! Watching the explanation of differential gear https://news.ycombinator.com/item?id=8513209 https://news.ycombinator.com/item?id=8513209, I thought why not make wikipedia the central axis around which you let the diversity of the semantic web spin at its own pace. If most people agree on this authority (or if you wish convention over configuration mess) things become easily connectable. In other terms instead of relying on sloppy ontology rely on wikidata_id as the sort of referential association table.