Tom,
I should also say that it is meant as a science essay not just a sociological experiment fantasy. It seems many people don't like the lifestyle of the inhabitants, they could easily imagine something different and more to their liking. However I think they should also ask themselves if it solves as many or more problems.If not I would question whether it is better. War, famine and disease are not exhilarating for most but misery.
There are some premises on which the essay is built. Though it does not become obvious until the end; the idea that the future can be built rather than just steering towards a space-time future that has existence in the space-time continuum, or towards a particular branching of the universe. That comes from my explanatory framework, it is the last reference in the essay. It is referred to subtly because to present it overtly might be seen as just using the essay as an excuse to talk about it.
The next premise is that there are problems that already have solutions that ought to be implemented.Allan Savory's work on combating desertification , pandemic vitamin D deficiency, night light cancer link, Fever cancer treatment are examples.
The third is that there are unknown and unpredictable problems that we will face, and that we can prepare for them, "filling the tool box". The chaos in the weather and climate were given as examples, there is reference to the Lorenz center and a really interesting video on why they are unpredictable and the need for more investment on even greater computing power. That's about physics. The Prairie dog tunnels, physics, the gills physics. I was trying to show how the physics (and biology) of nature can be taken and utilized to preserve and improve quality of life under extreme conditions ie. subterranean and subaquatic living.