Yet that human complexity was often created to help us deal with natural complexity.

Nature is indifferent. One year may produce an overabundance that the hunter/gatherer may take advantage of, yet the next year may be opposite and people will die from famine. So we learned how to preserve food as best we could. Yet that would result in a growth of population, an over population based on the resources available, so we learned how to grow our own food and manage livestock in order to avoid famine. That encourages the development of settlements. With denser populations disease is able to thrive, and, with trade, it is able to spread. So we learned how to manage waste. Each new development brings new pitfalls since we are meddling with the balance of nature. Or perhaps it is better to say that things are being balanced in new ways, so we must learn how to adapt to that. (We are, after all, a part of nature.)

Sometimes we adapt to those changes in balance in ignorant and extraordinarily damaging ways. I am not denying that. On the other hand, not trying would have hindered the development of intelligence -- or, perhaps, resulted in our extinction.

Every species molds the world to their desires -- we are just much better at it. Competition and being killed by another species is the only thing that keeps things in check, and even then, you get parts of nature that end up being shaped and dominated by one species (beavers, ants, some fungi/bacteria). The world used to be a molten blob, to eventually an ocean full of mostly one species, to now, and eventually, a dead husk.

Maybe the key difference is that natural complexity asks for adaptation, while human-made complexity often asks for submission

Is The Thinking Game, which sounds like a pile of poop, pivotal to your worries, or did you just mention it in passing?

Yes the world has always been utterly mysterious.

What's cuckoo today is the world is made, and it's not just mysterious it's crazy.

The european intellect is looking like a disease, an aberration, like a maladaptation that's chasing itself seeking a correction, except the rectification is just a recursive continuation of the disease.

And there are very good reasons to anticipate that humanity may be exterminated by this pathology.

Painful to find that your capacity to recognize the malaise is the cause of the malaise.