Well, thank god that we don't have the replication crisis hasn't engulfed economics, and that we can totally rely on the conclusions reached by a single working paper.

http://www.sciencemag.org/news/2016/03/about-40-economics-ex...

But in any case, among all the factors I listed, I agree that it's probably the smallest factors. In fact, I didn't even initially list that factor, and only came back and inserted it after my initial post. So the fact that it's a small factor doesn't refute any of the other ones.

Last comment from me. You go ahead and rebut all you want. But if you think getting poor people to eat better is just a matter of educating them and instilling a sense of self-discipline, you're quite wrong. Like many difficult problems, this one has multiple causal factors.