Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This book is as useless as the first edition

This author previously wrote a book called secrets of methamphetamine manufacture, which has so many errors in it that nothing will work as stated. See erowid.org/archive/rhodium/chemistry/eleusis/eleusis.vs.fester.html for a thorough analysis of the mistakes in this book. This new edition is equally as useless. The author obviously has no real knowledge of chemistry and He should be the last person on earth to write a book on this subject. It is a complete waste of money. You can find much more accurate information free on the internet.