My next point is about certainty. This goes to electoral law in general, which is to say that when we have electoral law, not only should there be, as far as reasonably possible, bipartisan agreement—a point that has again been made very well indeed by the Hon Dr Nick Smith—but also from the point of view of insuring against a system whereby every three years, with the change of Government or, at least, a change of Parliament, that we're going to have different electoral law according to the numbers in the House at that given time.