So let me just draw a random function. So let's say that's W. So this is a case where W's slope is increasing faster, or W's slope is increasing from that starting point. So our starting point, this was our slope, and then W's slope keeps increasing from there. 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.