Could I just make two points there? One, where this regime has been put in place, there's been a 70% to 90% reduction. We're not claiming that it's going to stop it all, but it has been effective in stopping the majority of the theft.
In terms of the slippery slope, we'd really like to deal with the issue today. That's all we can deal with. We need to deal with it first. If we come to a subsequent problem, we'll have to deal with it then, but there's no reason not to deal with the first problem because you think a second one may come along.