It's also a measure that's supported by pre-eminent health and dental health organisations around the world, as was noted by the previous contributor, Simon Watts. It is cost-effective to implement and, because of that, it enables us to reach more people. Essentially, it enables us to reach all New Zealanders regardless of their socio-economic situation, be it current or future. So in that sense, it's a current example of a postcode lottery, with different outcomes depending on where you live. Yet the science supporting fluoridation is really robust, and that science is also universally applicable.