Edit: Bungled my first response. Here's what I intended to post, in full:Hermit wrote:OK, I seem to begin to understand what you mean. Metaphysics is to me something ultimately disconnected from experience, something out there in the ontological sky the way Plato held the existence of "essentials" to be, without which we could not form any ideas whatsoever. His was the top-down version of philosophy. Without an ontological "one", "justice", "love" for example, we could never form mathematical concepts, or those pertaining to law or empathy, according to him. That is metaphysics to me.FBM wrote:The abstraction is when it becomes metaphysics.
My vaguely formed concept of the self, or the illusion of the self for that matter, is not metaphysical in the platonic sense. To me, whatever the self is or is not, is ultimately grounded in the material world.
Good again, then. We're on the same track, after all. Plato had his head up his ass.

Not so incidentally, neuroscience or cognitive science or both have identified, iirc, 3 areas of the brain (I'll have to look up which ones) that collaborate to continuously generate the sense of agency, aka, the sense of self, during waking hours. I'll provide links to the details if someone wants, but the point is that every experience an individual has is the product of brain functions, which are the result of the brains physical connections with the 5 senses. Now, the senses just pick up and transmit whatever stimuli from the environment that they come into contact with. The brain is where, as far as I know, those sensations are modeled together into an amalgamated representation of the external world. But, as in the case of optical illusions, the brain doesn't always model correctly. In order to counter this well-known capacity for error, science developed.