Light on information: relatively vague statements about what some believe versus what others say.  When reviewing another book in this series, I blamed the lack of substance on what happens when trying to write about “the unexplained.” But I recently read another book about Atlantis that had a lot more specific information to offer, describing in detail how and where the myth has developed across time.  I’m not sure whether the trade of substance for ease of reading is a worthwhile one — I suppose they each fit a different niche in the library, but if I had to choose just one, this wouldn’t be the one.