In order to overcome that, we think that there's a need to manage to bottom lines. In truth, those bottom lines in respect of water are now largely coming through the National Policy Statement for Freshwater Management that was promulgated last year. That will be transitioned into the new system and will be an example of the bottom lines that the system will be managed for. It is complex, because in some instances you've got this tension between strictness of bottom lines and the need to sometimes have exceptions. This has been made clear in a mistake that I was partly responsible for in respect of wetland rules in the National Policy Statement for Freshwater Management, where we probably went a bit hard and chose a prohibited status for nixing of any wetlands.