CCS is definitely less economic that not putting the carbon into the air in the first place. The problem is that we can't pass an arbitrary policy and expect i

CCS is definitely less economic that not putting the carbon into the air in the first place. The problem is that we can't pass an arbitrary policy and expect it to be dutifully followed from day one. So, economists would put a cost on a policy - say, how much money would some oil user require so he'd stop polluting? Remember if you just order him to stop, he can vote you out of policymaking. Or he may happen to live in a jurisdiction where your order turns into something more optional. Taking that into account, I think CCS considerations make a lot of sense.