And in this case, our estimate is going to be an underestimate of where W actually is after a fourth of the year. If W's slope is exactly the same as our function over the course of the year, over the course of the first 3 months, so it would look something like that. Maybe it diverges later on. And in this case, our approximation would be really good. It would probably be exact for W. And if W's slope, for whatever reason, goes negative after that point, and they already tell us this is an increasing function, so that is not likely. Well, it doesn't have to even go negative. If W's slope decreases, it could still stay positive.