This video, https://www.youtube.com/watch?v=guMAjf2NMNU&index=12&list=PLSjtLzqIlLSV9lp1sxz2G940CtthAxrDV&t=0s, can also be seen at https://www.youtube.com/playlist?list=PLSjtLzqIlLSV9lp1sxz2G940CtthAxrDV.