"Dr. Eaton is my mentor, my hero, my friend and a brilliant mind who introduced the groundbreaking concept of 'Paleolithic Nutrition' to the contemporary scientific community. … As Boyd has frequently mentioned, his idea will be modified and refined as more and more data become available," he wrote, but went on to cite several scientific papers about the percentage of plant food versus animal food (up to 65 percent) that was likely part of hunter-gatherer diets. "Accordingly, any recommendation to avoid animal protein is inconsistent with the ethnographic data of our hunter-gatherer ancestry," he concluded.