Comment by rendall

> Primary source of knowledge and information in a field. Constantly look for better ways of doing things. Write books and articles and does the lecture circuit.

Meh. I'm probably being picky, but it doesn't surprise me that a Thought Leader would put themselves and what they do as Thought Leader in the Expert category. I see them more as running along a parallel track. They write books and run consulting companies and speak at conferences and create a brand, and then there are those of us who get good at writing code because we do it every day, year after year. Kind of exactly the difference between sports commentators and athletes.