As officials, we live with what we're given in the commitment. It's a commitment, so we live with that.
I think the question was that if it's efficient, we should get rid of it, because then it's effective at producing more production, I guess. That goes to the challenge of applying an inefficiency test, and I think we've had a discussion about what that challenge is in terms of assessing that. We live with the collective commitment that was made at the G20. It is a collective commitment and we have made significant progress on the tax side.