There isn't a scientist anywhere who wouldn't tell you they could use more information and more resources to gather information. That's what we do. But in this case, we feel that our advice and our stock assessment are credible. There are always uncertainties. The uncertainties that we see in this case are not unusual to us; they are the kinds of uncertainties that are quite typical from a sound assessment. All of the information, including the basic analysis that we do, is in the public domain, and we very much encourage folks to have a look at that. If they feel there are ways we can improve our science process, or the way that we collect our information, then we're certainly very open to that.
On the whole, in these instances, we're quite comfortable that we have a read on what these key stocks are doing and that the advice we're providing around them is sound.