MICHAEL WOOD (Labour—Mt Roskill): That's right, I thought that Mr Guy deserved to hear from the "cheeky little whip" a little bit about the bill that he avoided for five minutes. It was Albert Einstein who told us that the definition of insanity is doing the same thing over and over again and not expecting the same result. We know that tackling climate change is one of the great imperatives of our time. We know that for no single sustained period in New Zealand's industrial history have we succeeded in reducing emissions. We know that the current emissions trading regime that's been in place for nearly 12 years in different guises hasn't been especially successful at doing that, either. We know that price is actually a pretty good mechanism for guiding people's economic behaviour.