The fact that many lead to the same loop(1) of Argument <-> Logic in unsurprising, too. Wikipedia articles usually define their subject in in the first sentence

The fact that many lead to the same loop(1) of Argument <-> Logic in unsurprising, too. Wikipedia articles usually define their subject in in the first sentence. Defining things works by saying what general category they belong to, then by differentiating them within that. E.g. A fish is any member of a paraphyletic group of organisms that consist of all gill-bearing aquatic craniate animals that lack limbs with digits. Google Inc. (NASDAQ: GOOG) is an American _multinational corporation_ which provides Internet-related products and services [...] A table is a form of _furniture_ with a flat and satisfactory horizontal upper surface [...] And so on. If you always walk up the abstraction chain because you're picking the first link (the general category), you'll end up at the root of the categorization tree, which is likely something along the lines of Argument, Logic, Fact etc. Note however that the current state of wikipedia has a different root loop for me, Logic leads to Philosophy. (1) or one of a very limited number of loops, I also saw Science <-> Knowledge.