This video, https://www.youtube.com/watch?v=OfASMyohm8A&list=PLSjtLzqIlLSV9lp1sxz2G940CtthAxrDV&index=10, can also be seen at https://www.youtube.com/playlist?list=PLSjtLzqIlLSV9lp1sxz2G940CtthAxrDV.