The Cascade Effects of Human Activity

Every single one of our activities has a characteristic that it generates an externality that is not well processed by the complex environment. When we're relatively lightweight, there's not many of us and we're not engaging a lot of those activities, the complex environment can still process it. Well, there's a lot of us, and we have increasingly intensive activities. So at some point, I'll only use a little tipping point here or there you get cascade effects that run all over the place. There's about 500 of these, each one of which tells the same story. It's big. The order of magnitude is at least a thousand years and probably only a quarter of a million years

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