Jim, I am grateful for optimists like yourself.
If the world were solely in the hands of people like me, not much would get done.
I do have to point out, tho, on the past sustainability of other cultures, that most of that could be attributed to the facts that:
1. The world was underpopulated
2. They were using man & animal based labor... no machines, no hormones, no pesticides.
And there were instances of collapse, of course... the Mayans could not sustain their cities, due to war, and many others perished due to natural catastrophes... drought, disease, etc.
It's not inconceivable that nature itself will 'correct' our problems for us in her way. We're a very cocky race, but a really virulent pandemic could roll things back in a matter of weeks. I hope not, but it certainly would solve a lot of problems in a hurry (distanced, objective observation). It would create others, too, of course, but more so for humans. Almost every other form of life on earth would appreciate the break from our nonstop activity.
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