This was a talk for “Academic English: Spoken Communication 2” that I gave last Thursday. Please note that this presentation was aimed for non-mathematicians and non-philosophers. Thus, I concealed any anxiety about the topic for clarity’s sake.
There is a short clip on the second slide and a GIF on the third one. Unfortunately, these won’t work for an embedded version of the slides – you should be able to access the full version using Keynote.