I agree. I see climate engineering as the short term solution that will get us to the long term solution. Without commenting on this specific implementation, experiments could be done. Many of the aerosol-type ideas are not permanent and would not last (and neither would their impacts). Models are good enough to understand the impacts and if they are not now they can be improved through a cycle of experimentation and further modeling. Other solutions are decades away and they have been for decades. Time to take this seriously. We are already engineering the climate, just not one conducive to life.