Thanks for posting the line about hats and coats which is a
crucially important topic, which I am particularly interested in, because it is much understudied and I think it's exactly right.
As to how the actual
Optics pertains to these - I can't comment much, I have to read them. If I had to guess, when we just look at something, what we literally see with our eyes are colours and shapes and distances, but we do not judge what we see with our eyes, but with our minds: this the shape I am currently looking at, which is grey, elongated and thin, is actually a flexible lamp.
Below it, what I see it an irregular sized object, with some orange, black and white. When I judge what it is, it's a book with deckle edge pages, which accounts for its irregular shape.
I could argue that my merely seeing with my eyes, is clear, as nothing is obstructing my vision, but it is not distinct until I judge what my eyes are seeing. I believe some account along these lines, is what Descartes might argue, in relation to Optics.
I'll get back to you on that if I learn anything new in the secondary literature.
But if there is the possibility that Descartes’ terms need not necessarily be read as metaphysical, then isn’t that the imposition of a framework (even by Descartes), and in the face of textual evidence of an alternative? — Antony Nickles
You can attempt to do an epistemological take, without the metaphysics and argue, that in "vulgar" (or ordinary) life, many of these objects are confused and unclear, but when we go into a scientific/philosophical perspective, our ideas of these objects become clearer and more distinct.
as an activity apart from the brain’s sensory vision—this as a ball of wax by the ordinary criteria we judge “makes up” or matter to us about a ball of wax, or a thing to throw at someone, or an adhesive for a poster to a wall, etc. and not “perception” as a mental process like vision or requiring “mind” to be an object, rather than our (and our shared) means of judgment and identification. — Antony Nickles
This would be terminological and not too controversial, this can be called an "activity", without much trouble.
Yes, the mind being an object can be problematic, because despite Descartes heroic attempts to clarify what a mind is, we, to this day, aren't sure what it consists of. But I'd only point out that without a mind, perception alone amounts for very little.
So, there is a sense in which the mind/brain is the organ we use to judge and identify things, while adding the qualifier that it is people that judge and think, and not minds, which doesn't change the main point, but is worth mentioning.
But he is realizing that our ordinary criteria for judgment are enough without metaphysical abstraction, thus that we can conclude these are people from only hats and coats. — Antony Nickles
The metaphysics can get into the way and distract the extremely valuable point he is making. Again, giving an epistemological reading of his account can be fruitful, and we can think about not two different aspects in the world, but different aspects within which we divide the world.
One aspect being the less reflective ordinary life, the other being the scientific/philosophical one, the latter being the domain in which we notice that what we are literally seeing are hats and coats and not people.