This report in my opinion is a Prime example small thinking of the people, bearing the title of scientists. How can we talk about dependence on marijuana, if these people do not understand the nature of addiction. If they know how our brain works and what is addiction, such nonsense will not be included in the report. And the thing is that for the brain are completely indifferent to what becomes an object of dependence, and it must be underlying psychological sphere. Therefore, the dependency object can be absolutely anything. All people can communicate, eat, drink, hear, feel.