To answer that question, Mr. Cullen, would mean looking at many initiatives we've taken—some of them internal, some of them external—and I think you probably know our position on this.
In the mid-1990s, I would say, although a majority or a core of the leaders of major enterprises concluded that the science was still not exact—as one could argue is the case today—there was a wholesale shift to what I would call a prudential approach. That prudential approach was based on assumptions that whether it was three, five, or eight degrees over whatever period of time we were talking about, we knew one thing for certain: the earth was going to get warmer, and on that there was no debate—