Those are excellent points, thank you. If I could just pick up on this issue of the benefit of international investment, could you just comment quickly on this issue of regulations that are competitive across jurisdictions?
Obviously we are competing with other jurisdictions that may have different kinds of environmental regulations from ours. Being sensitive to the fact that there are lots of other criteria we think about with environmental regulations, how do we develop them in a way that's competitive relative to other jurisdictions with which we're competing for investment?