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3 points

We just build a planet-sized sunshade to freeze the atmosphere

Cost, 100 to 1000 trillion. We can barely fund NASA

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5 points
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Every argument I ever hear against thinking about things in the cool space future boils down to “we couldn’t do it this financial quarter so it’ll never be possible at all”.

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4 points
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I like to think about the spacefaring AI (or cyborgs, if we’re lucky) that will inevitably do this stuff in our stead, assuming we don’t strangle them in the cradle.

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