First off, this is a well-written, extremely informative book about both medicinal and recreational use of marijuana. Before reading the book, you are either one of the five percent of Americans who smokes pot or you aren't. The book isn't going to make you run off and buy an eighth of dank if it isn't something you'd do anyway. Conversely, it isn't likely to make chronic smokers quit. The people who need to read this book (parents, elected officials, educators, etc.) most likely either won't read it or dismiss it as pro-pot propaganda. While marijuana is the most widely used illegal drug, I think it will be several decades before public opinion changes in favor of legalizing this drug, whose benefits are greater than alcohol and cigarettes, yet whose harms are negligible by comparison.