This video, https://www.youtube.com/watch?v=uass7qYQrio&index=4&list=PLSjtLzqIlLSW5PrqyKnjNXBt2BgY4X1D_&t=0s, can also be seen at https://www.youtube.com/playlist?list=PLSjtLzqIlLSW5PrqyKnjNXBt2BgY4X1D_.