So the costs that could be incurred in working out how much extra one would get, or rather the lesser amount that would be taken away from one, would include potentially getting tax advice from an accountant or a lawyer or, if one was doing it oneself, counselling—or, if one was doing it through a spouse on the dining room table, marriage counselling. These things are not free, and so there is a cost, and there's also an opportunity cost if one is spending time on one's accounts on this extremely complicated matter when one could be selling more widgets or services. So the value of it, I think, should take that into account, and I'd be interested to know whether the Minister has run that real-world filter over what has been proposed in here and the policy underlying it. Personally, if I were to be calculating this myself, I'd run out of fingers pretty quickly—that's the sort of digital calculation that I'm into.