Earlier quoted context omitted.
It was a 'shower thought'. I was reflecting on pretty much every podcast or written interview seems to start with the credibility of the guest. Author of a book seems to be the common theme. Creativity, philosophy, innovation that can be expressed in many ways - not only in writing a book. The purpose of my question was to survey what you all on HN thinks. I know my answer. What is yours?
sorry for the combative tone in my earlier comment. Though, the answer for me is (obviously) https://news.ycombinator.com/item?id=31902637
Np. Yeah @al_borland's answer is nicely put. I'd like to upvote that more if I could.