Discussion of "climate repair" or "climate intervention" or "geoengineering" is increasing, and becoming ever more serious. There are big risks with implementing such ideas, but as this talk states, there are also big risks in *not* doing something along these lines because we're already so far along the climate warming trajectory. I am skeptical that society can responsibly apply climate interventions, and I'm worried that some actor is going to go ahead and do it anyway.