No, I recognize it's a hard problem, that's why we should be devoting significant resources to doing things now.
I get the point about unintended consequences with cascading problems (and cascading solutions to the new problems) (https://news.ycombinator.com/item?id=2743879) but the odds of screwing up here are much less than screwing up on AGI, whose work has already significantly started and may be completed first anyway making this whole discussion moot. Geoengineering is risky, but it's not as risky as other things, including inaction, which as the status quo guarantees loss of thousands of lives. Even if the climate change alarmists' greatest fears come true we still easily have 50 years to try things on smaller scales before time is up. Anyway I think it's a lot more feasible for a strong nation to lead a technological solution than to convince all strong nations to curb their development. Call it a plan B if you must, but at some point I expect climate change alarmists are going to say something like "China and Russia and India aren't playing ball hard enough, their emissions are still causing global warming that will end humanity in x years unless they immediately reduce to the levels of the USA and the EU whose combined efforts bought us y years but it's still not enough, so it's time for war to make them."
I get the point about unintended consequences with cascading problems (and cascading solutions to the new problems) (https://news.ycombinator.com/item?id=2743879) but the odds of screwing up here are much less than screwing up on AGI, whose work has already significantly started and may be completed first anyway making this whole discussion moot. Geoengineering is risky, but it's not as risky as other things, including inaction, which as the status quo guarantees loss of thousands of lives. Even if the climate change alarmists' greatest fears come true we still easily have 50 years to try things on smaller scales before time is up. Anyway I think it's a lot more feasible for a strong nation to lead a technological solution than to convince all strong nations to curb their development. Call it a plan B if you must, but at some point I expect climate change alarmists are going to say something like "China and Russia and India aren't playing ball hard enough, their emissions are still causing global warming that will end humanity in x years unless they immediately reduce to the levels of the USA and the EU whose combined efforts bought us y years but it's still not enough, so it's time for war to make them."