[twblalock]

It seems like we have to do some geoengineering no matter what, because the emission cuts required to solve the problem are unattainable even if every government on the planet was trying to do its part.

The current climate change problem has been caused by unintentional geoengineering with an undesirable outcome. It's reasonable to assume that different methods of geoengineering can have different effects, and might be capable of helping solve the problem.