The outside figures will always remain unsatisfactory for the simple reason that the important things that happen outside the business happen at the margin, and so they are not expressed in figures until it’s too late. They are qualitative changes. You can quantify them, but you don’t really understand the relationship quantitatively. I’ve been struggling with this for 40 years, and I’m not the only one. There is basically no solid geometry to early qualitative changes that can tell you whether they are significant or not. You cannot easily convert a qualitative change into quantities.