True, but my model of CO2 is that its damage is proportional to the area under the curve (quanity CO2 * time in atmosphere). So deferring that C02 release by 1

True, but my model of CO2 is that its damage is proportional to the area under the curve (quanity CO2 * time in atmosphere). So deferring that C02 release by 10 years is strictly a win, b/c you haven't incurred the climate effects of that C02 for those 10 years.