So given that there’s a moral hazard to the problem – once government agents commit to doing it, we alter any subsequent decision by private agents to invest in carbon removing technologies – and there’s a series path dependency with turning it on – once we start doing this it is incredibly dangerous to stop doing this – I wouldn’t treat the decision for the government to add this to our intellectual and global warming portfolio of options as trivial.
— A little more on Geoengineering - Mike Konczal
Read the whole thing. Timely, coherent, and simple.