Pacman and Paclady get to the resort, and have a fantastic time skiing, but get lost. Unfortunately, a blizzard kicks in right then, reducing visibility. As Pacman panics and brings up the Aspen Red Ghost Chase of 2012, Paclady remembers that their glass igloo cabin is located at the global minimum elevation point of the resort ( = 5 x=5). The blizzard complicates things, since they can't ski due to the reduced visibility for safety. After thinking for a minute, Pacman says, "Aha! We can get home in that case by following gradient descent, as long as we employ a small step size -- once we hit a gradient of 0 0, w