 There is another explanation for why Johnston’s principles (1) to (5) are important, besides their being folk beliefs. It is more plausible to see them as items of knowledge: of facts or truths, that are readily accessible to someone who has the relevant concepts. For example, once we are fluent with color names, and are competent in the exercise of color concepts, we are then in a position to come to know that Unity holds with respect to the colors. We won’t discover this, however, until we have familiarity with a wide range of colors and can see the various colors ordered in suitable arrays. Likewise, with the other items in Johnston’s list, e.g., (5), the doctrine of Revelation. Indeed, if we look at item (1), in Johnston’s list, the item he labels “Paradigms”, it explicitly states one such sort of fact: it states that there are paradigms of canary yellow, things that are canary yellow. 