Will my noble friend reflect that it is not just carte blanche? There will be situations where an oil company finds a new field, perhaps like the one 200 miles north of the Falklands, where the quality of the oil is far better than the oil that we produce in the North Sea, and it would make economic sense to substitute one for the other in the future. Then at some stage, that field will be reduced. It is not absolutely static, is it? We now want a situation where the industry decreases but at the same time improves the product.