This video, https://www.youtube.com/watch?v=pd_ihS-6yfM&index=1&list=PLSjtLzqIlLSV8aW4TH3RL6qweMeFDwc8D, can also be seen at https://www.youtube.com/playlist?list=PLSjtLzqIlLSV8aW4TH3RL6qweMeFDwc8D.