This video, https://www.youtube.com/watch?v=WiMcN5gUMyc&index=7&list=PLSjtLzqIlLSUqJCDU0280ZY9yZQJ1SV1M&t=0s, can also be seen at https://www.youtube.com/playlist?list=PLSjtLzqIlLSUqJCDU0280ZY9yZQJ1SV1M.