The issue is they are a massive global project that requires the same sorts of measurement ambiguity that lets people argue over anthropogenic climate change in

The issue is they are a massive global project that requires the same sorts of measurement ambiguity that lets people argue over anthropogenic climate change in the first place. I’m not going to argue the physics, because you’re right about it being a good strategy for all the reasons you mentioned… but unfortunately this is a worse is better scenario. Direct methods that produce measurable byproducts that can be used to directly quantify how much CO2 has been removed, are macroeconomically speaking, going to be easier to find backers for both financially and politically. Without those backers nothing will happen with any large scale climate change mitigation efforts.