All right.
The second question is somewhat related to that. Concerning shale gas development, you've made the statement that cap and trade is not the direction to go; it is the carbon tax.
How would that influence investment decisions? Could you walk us through that a bit?
What would be the difference in the application of a cap and trade system with respect to the shale gas, as it would be reflected in investment and in research and so on, as compared with a carbon tax?