John Lott's subtitle mentions that the book is a study in law and economics, and that's exactly what it is. For the most part, the book is very readable. On one or two occasions I found myself drawing on my knowledge of statistics, but this book is by no means accessible only to academics. Lott's study is significant because it deals with every county in the US as a separate entity. As he shows, it is unjustifiable to treat entire states as homogeneous units. As well as presenting a thorough explanation of his study and results, Lott deals with some of the most common objections to his work. I would recommend this book to anyone attempting to understand the effects of concealed carry reform.