If a sober-minded cost-benefit analysis concludes that geo-engineering isn't viable, fine. But I don't think this is the modal way that geoengineering is being

If a sober-minded cost-benefit analysis concludes that geo-engineering isn't viable, fine. But I don't think this is the modal way that geoengineering is being dismissed. Also these are similar arguments to what has been used to criticize nuclear energy for decades, which has obviously been a disaster on net.