Greetings!
This has taken too long to make, and I'd like to polish it more, but it's time to release and move on to other things. Apologies for not posting the text here, I was having formatting trouble.
Yes, I attempt to solve/explain consciousness. The main document is around 13,000 words long, which takes an hour to skim-read (not recommended) but probably 2+ hours to read correctly.
Let me know what you think!
Edit 9/9/23: Of the criticisms I've seen of EC (both here and elsewhere), none have struck me as having passed my ITT, and/or there is frequently some selective amnesia on display (or more probably, people skim-read the document) regarding points I explicitly take great effort to address. One might wonder why I largely haven't engaged with EC's critics, since consciousness can correctly be considered the most important feature of the universe; important to get right. But in light of the solution to C, comparatively little actually hinges/depends on C, or on what people think of it. When combined with the subtle conceptual nature of the problem itself (lossless communication is difficult and idiosyncratic), these factors have lead me to largely not deem it worth my energy to engage. If someone had an actually novel or ITT-passing criticism, I would be in a better position to engage. Lacking that, the most compact and well formulated memetic package on offer is still the document itself. If I was invested in any given critic "getting it", then my engagement would largely look like me insisting they re-read the document with greater care, and/or I would go through it line by line with them, to combat the amnesia problem and actually find where they go off the rails. That kind of effort doesn't scale.
That is not much of an explanation. All of the things I attribute consciousness to have a brain. Observations on people with identifiable brain-damage show impairments of consciousness of different sorts, that can be mapped to different parts of the brain. This strongly suggests that the brain is not merely a channel for some separate consciousness, but somehow (and we have no idea how this is even possible) is actually doing consciousness.
But it appears that not all parts of the brain do this. In humans the cerebellum seems not to. Damage to the cerebellum, as far as I know, will disrupt motor control but does not seem to disrupt consciousness.
So which neural tissues are capable of "doing consciousness", and how do they do it? Nobody knows. Are jellyfish conscious? They have no brain but they do have a diffuse nervous system. Is that enough for consciousness? Are neural organoids conscious? Does it matter what creature they were cultivated from? A real explanation of consciousness would be able to answer these questions. A real explanation must predict what is conscious and what is not, and provide a way to test these predictions. Finding such an explanation, making such predictions, providing a way to test them, testing them, and finding them confirmed would be in the top rank of Nobel-level work. I am not expecting to see such a thing for the first time on LessWrong.
That is a hard requirement. I have no reason to think that rocks have experience, and as I said above, an explanation must account for the negative examples as well as the positive.
Electrons also exist. Quarks exist. Electromagnetic fields exist. The integers exist. What problem is solved by saying that "existence is experience"? This is an empty verbal formula that does not constrain anticipations of future observations.
A lot of this is basic epistemology and independent of the particular subject. "Consider both positive and negative examples." "Constrain anticipations of future observations."