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All true, but "the scale of it all" will be truly mind boggling whatever we do, or don't do. Solving this problem will require engineering on a scale never seen before, failure to act will result in losses on a scale never seen before. So it's not a choice about scale, it's a choice about the survival of civilization.

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I completely agree. My only argument was with the word "just." It's a massive problem, and if we were a rational civilization we would be doing everything possible right now, before it's too late. It should be as high a priority as if a civilization-ending asteroid were on a collision course with the Earth.

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