Oh, you want us to stay on subject? You nut!

It is an intriguing concept and far better than food questionaires. For instance, I got sick on a vegetarian diet: turns out, according to my probable ancestral diet, I don’t have the enzymes to get enough protein from animal sources. Which explains why I can do whey smoothies but not pea protein smoothies.

So it can have some utility by at least showing the range of human adaptation. Ask an Inuit to live like a Kitavan, and there will be trouble.