30 minutes? That is for sissies!
When I gave my first Public Talks they were 55 minutes, and the audience had to endure them! Actually I did my best to keep it interesting but some of the outlines were , well you know…..
They changed to 45 minutes for a number of years. By the time they changed to 30 minutes I was leaving. I remember saying to my wife that that I would not have been prepared to drive several miles to give a talk that short . It is hardly worth it, but they do , don’t they.
I could never have done it if I did not believe what I was saying. I really did….