Really interesting topic, super poor execution. Again, this is a really poorly written book. It sounds like a graduate thesis that Warner decided to capitalize on and publish as a book for the masses.
The details in this book are tedious and extraneous, to a point that the valid points that Warner tries to make are very hard to follow. All of the sources make this sound like a history research project that was used for a graduate level course where she is trying to use sources to support her conclusions.
This had so much potential. I'm thinking Sarah Vowell or Erik Larson. This book could have easily been there in readability and amusement potential. If she wanted to be more serious, she could have still done so with a little less dry library feeling.
The section on how crack is like gin, at least in public policy was weak and tacked on at the end. She could have made more references to prohibition of booze and more mention of the war on drugs. There was a good tie in there, but again, it was poorly executed and diminished by the overwhelming amount of material, redundancy, and sources focusing on gin for the vast majority of the book.
I did really enjoy her insight on how drugs are only attacked under certain circumstances (have to be new, perceived as stronger than previous drugs, etc, etc). I also appreciated her observation that drugs are only targeted during times of peace. Warner's discussion of how drugs are used as a surrogate scape goat for other social problems and how the effect (drugs) are often targeted instead of the cause (poverty, infrastructure, lack of family planning, etc).