There are a number of points there. I'll be quick.
When we provide these projections, we also provide risk analysis, so we provide these--we call them fan charts--probabilities based on historical track records of the average private sector forecast. What will this mean as we project, both for nominal income and for the fiscal balance? What will it mean going forward? These ranges are actually provided in your chart package today. That's how we deal with kind of the highs and the lows of uncertainties around an average private sector forecast.
If this committee gave us specific questions, such as, what if growth were one percentage point higher or one percentage point lower, could we translate that into a forecast, or what if interest rates were...? We'd be very happy to do that for you, sir.
Also, sir, I think it's fair to say we've done a lot of work for you and other members of Parliament, which is available on our website, on private members' bill costing. We don't write legislation, so we can only cost if the legislation is specific. In the same way, we can only comment specifically and provide tests of reasonableness on crime legislation or what have you if we see the methodologies and assumptions underneath it. Otherwise, we will provide an original data point.