Rt Hon JACINDA ARDERN: A couple of things. Again—and I give these merely as explanations and not as defensiveness, because I think there is agreement in this House that it's a useful tool that we'd like to use more widely. But one issue I'd first raise is that, yes, it is, as I understand, being used in Australia—again, an example of how it's not necessarily the only thing that needs to be done to provide protections, because they have had issues too. We're all dealing with a tricky virus. The second thing is that even when it's used in other places, some will have different strategies than us. Ours is not a strategy of just picking up the frequency or the incidence of COVID; we want to stop every single case. As we spoke about yesterday, that's why validation is important, and that is the issue that Health has raised with us. Before they remove a reliable form of testing, you have to validate what you're using here. It doesn't matter if it's working well in Taiwan; you have to validate here.