How did the stories of George Naylor in Iowa help Michael Pollan to understand and communicate his subject?

Daisy:

Pollan really wanted to follow the process of corn from the fields and the farms, to the dinner table. He also wanted to see how this entire system was treating the farmers of middle America. His stories about Naylor helped give perspective to the readers in terms of how farming was like, from back when Naylor's grandfather operated the farm to now.