In the tradition of these new Standing Orders that we have around the committee stage, I'm interested in whether or not the Minister has actually got any guidance for the committee about what he thinks the sensitivity will be to behavioural change. In other words: where does the Minister really think this is going to land? We say $550 million if there's no behavioural change, but, of course, we know that once people see that they could save, perhaps, tens of thousands of dollars by changing the way they structure their affairs or their income over $180,000—as one wag on the National Party benches put it, another way to avoid tax is to stop working. Does the Minister have any conclusive sense over what levels of behavioural change there will be in response, and how much revenue will come from this? 