In the book's defense, there are about one bazillionty foot notes. It's not that sources aren't cited, it's that the citations are treated as "stuff that would bog down the flow of the narrative," rather than "stuff that the reader would love to have more detail on." (readers like us!)

The structure is clearly to make the book more salable - but it's not flimsy science....it's just not a "science book," if you get what I mean :)