Financial Services Bill

I accept that. It gets to the nub of the issue. There is no single variable that has an impact like pulling a lever and an economic outcome comes along down the track. A number of factors combine to create an economic outcome. That is why people say it is sometimes more of an art than a science, but in so far as there is an ability to make projections or to measure, that assessment is needed. I hope it could be as sophisticated an assessment as the hon. Gentleman suggests.