This video, https://www.youtube.com/watch?v=mSHIgkeQ3TQ , can also be seen at https://www.youtube.com/playlist?list=PLF3VXonk-wHnlXXNb5RlpoAivsMI_XfOt . This video, https://www.youtube.com/watch?v=Zg56aTcdymU , can also be seen at…