[thinkingemote]

I think he learnt how to speak from a few decades of teaching, and in his teaching technique (as opposed to speech giving, debating). I've noticed most teachers and lecturers I've met as being good confident speakers. Not all academics, but the proper educators, almost all yes.

I've noticed that he does fall into set patterns of anecdote and stories in interviews, like he will reply to a question and then pause for a little bit and then reply with something almost pre-scripted, a previous thought but slightly changed.