Well, I won't call him a "famous speaker", not outside of a specific field (politics and finance). By famous I mean popular in a broader sense. On the tech side

Well, I won't call him a "famous speaker", not outside of a specific field (politics and finance). By famous I mean popular in a broader sense. On the tech side of things that would mean Steve Wozniak famous, so to say (famous for his contribution on a specific field, but broadly recognized as popular).