This was my thought. I think the article reads almost like a children's Did You Know? kind of book: it presents the problem and just enough background informati

This was my thought. I think the article reads almost like a children's Did You Know? kind of book: it presents the problem and just enough background information to understand it, then leaves the mystery for the reader to go and find out more. I could see the argument that there is a fine line between leaving a bit of mystery and just plain lazy writing.