And this right over here is our time axis. And this is at 1 fourth. So in the last video, we said, hey, this is sitting right at 1411. If W's slope increases from that point, then this is an underestimate. If W's slope stays the same, then this is actually a very good estimate. Because then we're going to hit that point directly with W. And if W's slope decreases, so you can imagine maybe W looks something like this. It has that slope of the tangent line when it starts, but then the slope decreases.