I haven't actually looked at his analysis, so I don't want to comment on it specifically. As I said in my remarks, every one of our projects has been looked at generally by an accounting firm to confirm the way we've looked at it and that there is value for money. It is correct that the heart of the rationale for public-private partnerships is the risk transfer. That is a difficult thing to get your hands on and to get your fingers into.
What we've done to calculate that is hire experts in cost consulting, people who have many years of experience delivering projects traditionally, for the private sector, for the public sector, and who also have experience with public-private partnerships. And they've developed very comprehensive risk matrices for us that put a value on the sorts of risks that are transferred in the context of a P3.