"The paleo diet is basically a fantasy, according to Dr. Marlene Zuk" is personally my favorite line. Albeit it warrants an explanation- which you can find in the rest of the article.
A Registered Dietitian wrote it. As she summarized at the end a lot of research is ongoing- there really is no proof this diet is superior to any other. Calories in = calories out people.
What frustrates me is that the "creator" of the diet makes some bold claims that are based on some weak studies.