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I'm not sure this is relevant. I mean, yes, they most certainly changed the planet itself, but it wasn't really to benefit themselves, was it? We build skyscrap

• Terr_ 10y ago
  > but it wasn't really to benefit themselves, was it? Well, their descendants are pretty much everywhere you see something greenish, so it seems to have worked out. > We build skyscrapers and Howitzers for intentional purposes, not because we excrete them. We also emit pollution for intentional purposes. They might not be particularly noble purposes, but they're 100% intentional by each of humanity's individual parts. I think you're confusing "the tools we use" versus "the ways we change the globe". Most of the worldwide changes we cause are not explicitly planned or built, but side-effects of the "metabolism" of our civilization.