Terrapin Station wrote: ↑March 29th, 2020, 10:23 am
I'm using the standard philosophical distinction where "real" is the same as my "objective"--"real" refers to extramental phenomena. This is the sense in which anyone who is an "antirealist" on any x is using the term. Antirealists are denying that x occurs extramentally. They're not necessarily denying that x is a mental phenomenon.
TP, this entire "mental/extramental" dichotomy of yours is a postulate of a particular ontological theory, which, like most ontological theories, is nonsense. The only evidence you can possibly have for any "extramental" phenomena --- entities, events, properties, etc. --- is sensory phenomena, which are all "mental phenomena." ALL of those entities, events, properties are constructs of your brain, constructed from the raw material of sensory impressions. Rocks, stars, trees, colors, odors, sounds, cats, butterflies, other humans are no more "real" (in the transcendental sense I think you mean) than ideas, love, joy, meanings, theories, laws, principles, electromagnetic and gravitational fields, photons, quarks, virtual particles, money, religions, minutes and seconds, and endless other hypothetical and abstract entities. Those are all entities --- including the rocks and trees --- invented or postulated by us to impose some order, some coherence, on the kaleidoscope of sensory experience. They are all "real" if they play some useful role in that endeavor.
"Real" things do, of course, fall into different classes, and propositions asserting the existence of something have different kinds of truth conditions, depending on the class to which the thing belongs. You can't confirm "Alfie loves Annabelle" by the same method you would confirm "It's raining outside," or "There is no largest prime," or "Slavery is morally wrong." But all of those propositions have public truth conditions of some sort.