An organization with eight people in it might be happy, profitable and growing. The same business with twenty might be on the way to bankruptcy.
Ideas, markets, niches and causes have a natural scale. If you get it right, you can thrive for a long time. Overdo it and you stress the inputs.
The earth has a carrying capacity, certainly. It might change as a result of technology (we know how to grow food more efficiently than we did a century ago) but in any moment of time, there’s a limit beyond which degradation kicks in. I don’t think many would say that we currently have a people shortage. (Impossible to pull off, but worth considering: what if we skipped a growth cycle in the population and everyone in a generation had just two kids? Or even one…) [read]