I found this post in the Daily Yonder to be right on. [ed--even though he likes a lot of Pollan's ideas--Yes].
Bill Bishop criticizes the issue for ignoring, mostly, farmers. I don't think farmers have any direct line to wisdom, even when it comes to agriculture, but I doubt an issue on movies, or novels, or even auto-making, would so minimize the role of farmers.
(Note: I should hat-tip someone, but I moved too fast and lost the reference.)