TL;DR, but isn’t this “bad outcome scenario” predicated not on the geoengineering itself, but the idea that if you do it people will think they no longer have to reduce carbon, and allow the level to continue to rise? Done in conjunction with carbon reduction geoengineering buys us and our nonhuman shipmates on the good vessel Earth time to correct our errors.
I fear just reduction is simply not enough at this point, and we’re currently not doing it as fast as we can. Witness our Feckless Leader throwing a wrench in the expansion of the solar business just to favor his pals, it’s like fighting over who gets the good seat on a sinking lifeboat.
