One thing nagged at me, and Pollan only paid passing reference to it in his book. That is the question of how can you scale this up to serve the whole country, or more to the point, the whole world? It is impossible to read the book and not fall in love with Polyface Farms, but the fact of the matter is that we do not have the land or the resources to feed everybody from farms like Polyface.
I was pleased to see a little piece in the Austin American Statesman on this today called "Microgreens for the Masses". In it, the author outlines some practical recommendations for change with a very sensible realpolitik tone. If you're interested in this kind of thing, click on over. Then write your senator...