Second of all, what the member is suggesting is a voluntary agreement. Whilst the zero carbon bill was going through the House and before we had a Climate Change Commission, we set up something called the Interim Climate Change Committee, which had a number of people on it who had had some experience over the last 30 years with agricultural greenhouse gas research and various attempts, over the course of the last three decades, to make progress on this issue. There have been voluntary agreements between Governments and the sector before, which haven't resulted in anything. We also got advice from the United Kingdom, because they also have a voluntary agreement in the United Kingdom. The advice is they said it's not going anywhere. So it's an issue of incentives.