I do want to say something. This is not a recent problem. If you go back to the early 1980s, when we were first doing proper empirical studies of child sex offending, the figures found then were one-in-three to one-in-four girls, about one-in-nine boys. Those remain the figures that we still find today across the OECD. This is an epidemic of very, very long standing. And I want to say that because I think it goes some way to answer the Greens' concern as to the retrospectivity of this law. There is justification; when we have a problem of this magnitude we need to take it very, very seriously. And one of the issues with this—in fact, I really want to break what I'm going to say today into two parts. 