Our thinking has been guided by best practices in regulation. The first example I will mention is Norway. The U.K. has followed, and Brazil just converted to goal-oriented regulation.
The basic tenet of goal-oriented regulation is that you regulate for the outcome—as you say, for the safety. Even if you drive at the speed limit, it doesn't mean you are driving safely. So our regime combines some prescriptive elements with, more and more, an accountability on the part of the operator to prove to us that their specific solution for a specific environment, for a specific well, is safe.