I think that's well said. I would add to that, sir, that these types of models.... Everybody is using these models. It wasn't hard to find them in the U.K. and the United States. They're well used. In the SAR reports that we're using now, we provide an estimate actually of O&S. It's based on a CER parametric kind of model. So these models are well used. They have limitations.
On May 3rd, 2012. See this statement in context.