As the professor points out in that lecture, plants have their own problems (fiber). Human digestive tracts are made for high-quality (bio-available energy/mas

As the professor points out in that lecture, plants have their own problems (fiber). Human digestive tracts are made for high-quality (bio-available energy/mass) nutrition-dense foods, unlike ruminants, or large apes like the gorilla. And most people get plants confused with seeds. No other animal eats seeds in the quantities we do, especially as Omega-6 rich seed-oils. Pollan has become a touchstone for many, but imho he's fairly wrong.