My English 1A students are writing an argumentative essay that defends or refutes the Paleo Diet, but it turns out that the Paleo Diet, as it is marketed today, does not exist, has no archeological basis, and is in fact a gross fraud. So now the whole idea of the argumentative paper, pitting two powerful opposing sides against each other, is gone from my students' assignment. The "Paleo Diet" at a serious disadvantage. We've got a one-sided argument on our hands. Looks like the last time I use this assignment.