As he mentioned in the interview. He let his curiosity and desire to know lead him.
That's how one would activate any book. Follow your curiosity, that usually determines what you desire to know. From there you form you mind probing questions and activate to bring to consciousness what you want to know.
If you want to be on Jeopardy get curious about everything.
The guy probably is an in intuitive PhotoReader. One who applies the skills without realising or being able to explain how he does it. He probably returns to the same books time and time again glancing over the text and dipping where he finds information that impresses him. This he probably connect to other thoughts and knowledge he has already discovered over time. He certainly isn't rushed in the process. I don't think he set out to be on Jeopardy but wound up there because of his natural knack for learning.
Alex
[This message has been edited by Alex K. Viefhaus (edited July 20, 2004).]
