I am a physician specializing in Addiction Medicine and I am Certified by the American Society of Addiction Medicine since 2004. I worked for years in drug addiction treatment facilities in Philadelphia, including inpatient "detox/rehab" and methadone maintenance therapy for opiate addicts. My experience and knowledge in the field of addictions clearly confirm that classifying Cannabis in the same group with heroin and cocaine is one of the greatest scientific fallacies of our time. Alcohol is infinitely more dangerous than Cannabis, both in terms of potential for overdoses and the inducement of physical dependence. YES to Cannabis Legalization, and YES to California Proposition 19!