Since we're talking about the behavior of comment threads, I hope you won't mind me mentioning here that I would love to be able to collapse a comment from below its nested replies in addition to the top of the comment. I'm finding that I often am scrolling down a chain of nested replies to see if anything new has been added, discovering that nothing has, and then scrolling up to collapse.
EDIT: never mind, that's what the green bar is for! I just hadn't seen any new comments yet :D
Interesting. One of the terms that is used in Buddhism is "ego-identification" -- this is the belief that all of my perceptions come through a specific physical body, and therefore I am this body. I'm probably oversimplifying, but my understanding is that this belief should be understood to be erroneous, and actually seeing through and letting go of this belief is a major milestone. It occurs to me now that ego-identification is a kind of perceptual chunking, perhaps the most fundamental one.
You may find it worthwhile to read Loch Kelly's book Shift Into Freedom. It's a relatively quick and easy read and teaches a style of practice oriented around "small glimpses" which don't take much time. It doesn't focus on developing concentration, which it sounds like you have a lot of already.
Is there a meaningful difference between a Toolbox thinker, and a Law thinker who is "careful to understand the context and the caveats: when is the right time to think in Law, how to think in Law, and what type of problems call for Lawful thinking"?