Well here it is..I went to YouTube and it was still in the list.
The key with watching is not to throw ones hands up early and declare it's nonsense..but realise he is using simple examples to show a very complicated picture that has taken many years of research to develop...anyways we are very lucky to have access to this stuff as once you would only get this if enrolled in the appropriate degree course.
https://youtu.be/ruJgtjpSoPklex
Alex