If 2023 ends up giving us AGI, room-temperature superconductors, Starships and a cure for cancer, I think we will able to call it a good year...
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The practical details should be figured out in a decade or so. The political side may be harder.
https://marginalrevolution.com/marginalrevolution/2023/07/su...
Are they all understood? Sure, it seems like a rational suggestion, and we know that if we add it to the atmosphere it should cool, but what other effects will it cause? How many times have we tried this trick where we introduce something new to an environment and it doesn't turn out like we'd like it to? Feels like we're hoping to apply a band-aid but not deal with the wound.