MATT DOOCEY (National—Waimakariri): Thank you very much, Madam Chair. Just carrying on from that response—and thank you, Minister, for that—because I just want to drill down, I suppose, into the rebate. Under clause 15(1G), you've got "a - b = c". And, you know, fair to say, with algebra, sometimes "a - b" doesn't always equal "c". I was interested when you gave my colleague from ACT—Mark Cameron—those figures around—