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When this happens, the advice is to get out of bed and do something else (without bright or blue light) for a while.

I notice a distinct feeling of boredom after a certain amount of time in bed.

I notice a tendency to find more things to do (such as research questions) leading up to bedtime, similar to how I miraculously find more tasks to do (such as taking out the trash) when trying to leave the house for an appointment (I have a lifelong habit of running late as well; I suspect a relation between these two).

This perpetual creep of waking time will mean one's circadian rhythm is messed up, inverting every several days. (Being out of sync with sunlight is a health concern.)

Daytime noise in any kind of city is hard to avoid. One can try to optimize their living situation to avoid, but that's not always doable. Earplugs and noise-machines can help, but have never been totally foolproof for me.

This perpetual 2-hour creep is not compatible with the obligations of life, such as getting to work by 9am every weekday.

So just stay up 18 hours every day, and sleep in the next day by the extra two hours (assuming 8, which seems optimal for me).

I do fall asleep more quickly the longer I've been awake, but not by as much as one would hope. After being up 18 hours, it still may take an hour or more for me to fall asleep.

If I had a large dinner only two hours before attempting sleep, the trouble to fall asleep seems about the same as if I have an empty stomach, or any other degree of fullness on that continuum.

I suspect the issue is mental, because I sometimes feel tired getting into bed, then immediately feel progressively less tired, the longer I am in bed. The tiredness sometimes comes and goes, over the course of maybe one or two hours, before sleep comes. This suggests to me that my thinking is causing my wakefulness. I have observed this effect for as long as I can remember.

On days when I have extensively exercised, worked, socialized or all of the above, my trouble falling asleep seems largely unchanged. (It still often takes ~2 hours, without chemical intervention.)

On days where I have not looked at a screen at all, my trouble falling asleep is the same.

Adhere to standard sleep hygiene. That will help you fall asleep in a reasonable time (<30mins?) and get a healthy 7-8 hours.

Time-release melatonin also does not noticeably affect the larger issue for me of falling asleep.

Time-release melatonin has solved the backfire problem for me. But I don't want to be dependent on it forever to get a good 8 hours.

Standard melatonin backfires, causing me (and at least one other person I know) to wake up at around hour 5 after falling asleep (maybe when it has finished metabolizing). This is bad, especially if it means you cannot fall back asleep (as in my case, more than half the time).

I am sometimes physically tired by hour 16 of the day, but I can easily stay up and continue working to hour 18 or 20. I have no caffeine or nighttime sugar.

Sleep is a challenge for many, including me. Let's see what we know.

Falling asleep has been a lifelong challenge for me. I suspect there is a "preference fight" going on, among other things, keeping my thoughts highly active.

The capital a business receives from a buyer is feedback that is non-specific to the content of the product or the business which produced it. It's not knowledge bearing. It's a fungible, universal form of feedback, like energy -- and like the number of instances of a replicator..?

The appropriate term is range, not codomain. Correcting that and the redundancy per #5189: A program's reach is the intersection of its range and the solutions to current problems.

I think all problems are known, so we can just say "solutions to problems."
A problem is a conflict between theories, meaning it relates to knowledge currently instantiated.

I'm on PC, and alt+shift+hyphen does not work—but alt+0151 on numpad does... which is a very Windows way to do it, but I'll take it.

But then there would need to be a preprogrammed dogmatic program at the bottom. (Or would there..?)

This framing seems good, sure. So what does "critical" really mean?
Does it mean: "Can change an existing thing"..? But that criticism program is dogmatic w.r.t. itself, isn't it? This is the whole question, here (or I'm confused), in your terms:
Can criticism, the variation of a dogmatic program, only happen at the hands of another dogmatic program? There's only "externally facing" criticism..? There are no critical programs? Only dogmatic ones criticizing other dogmatic ones.