I'm not recommending a target for the country. What I'd like to provide to the country are the marginal costs of different target levels. The target you see in the diagram in front of you says that we would have to shift toward a carbon tax or its equivalent through regulation of about $180 per tonne of carbon dioxide. We'd have to get to that by about the year 2020 in order to have our emissions fall by about, I believe, 60% from where they are today or 80% from where they would be in the future.
I'm an expert on analyzing what the costs of abatement are. Then someone has to mix that together with the environmental evidence of the impacts, and I'm not prepared to do that.