On the question, then, around the difference between emissions intensity and hard caps, I'm still confused as to why industry wouldn't seek the certainty of a hard cap—a fixed, across-the-board, level playing field for all of the competitors in your association—as opposed to the notion of intensity reductions. If climate change is a serious consideration and there are some, at least, in your industry willing to internalize the costs, why is there a reluctance about a hard cap concerning something we see as a threat both environmentally and, in the Stern report and others, economically? If we've done it before under the Montreal Protocol and other agreements, why is there the resistance to that?
