We haven't, because in our mind there is this really important and unanswered question of what is the incremental effect. We would have hoped, given all the experience in the U.S., that there would have been a better answer for this, but we don't see it. We doubt very much the effect is zero. We don't think it's 100%, and we don't think it's zero. We think it's somewhere in the middle, and where it is remains a very good question which we don't have the savvy answer to, and that's what you would need.
On October 17th, 2017. See this statement in context.