"Given that the results will be largely benign, there are worse ways of blowing billions"
True. However, billions and soon trillions will still be wasted on defending a doubtful AGW thesis, while governments are ignoring real problems. An ETS and other similar schemes are just bad solutions to a problem that’s gone, fighting a cause that never was. If we had spent this money on at least one important issue, such as finding a cure for cancer, we’d have it solved by now.