First of all, I'm at a law faculty. I don't do any modelling; I talk. You may have noticed that.
As I responded to the question about carbon taxes, I think the practical implications of these things are important. You guys have to take them into account. When I write, I try to take them into account too. We'll have a conversation about gift and inheritance taxes at some point. I know that's a difficult tax to introduce, but I think it's a right one and that there are ways to introduce it.