I appreciate that.
I have a couple of minutes left. I want to follow up as well on determining the amount. You said in your presentation that the U.K. government estimated $30 billion. You've estimated $90 billion, which is obviously a massive difference in numbers.
I see the benefit in trying to determine a number, in the sense of the process of trying to determine a number, and that investigation will obviously reveal some benefit. I guess my concern, though, is that when you start putting numbers out there—and you put out a $90 billion number and the government puts out a $30 billion number—it becomes more a debate about whose number and who is right, and why the projection is off here and there, rather than about the information gleaned from trying to find out what that number is.