This video, https://www.youtube.com/watch?v=dOp4zXt1Hc0&list=PLUpQzSnKparipCK-81Mqlr2JQgCh0HWT_&index=1, can also be seen at https://www.youtube.com/playlist?list=PLUpQzSnKparipCK-81Mqlr2JQgCh0HWT_st=PLUpQzSnKparipCK-81Mqlr2JQgCh0HWT_.