Bierson’s conclusion is due to his research seeking facts to support an already-assumed conclusion. Based on my research and my own personal experience, I have found that several of his points, when looked at logically, do not reach his conclusion.
One of Bierson’s strongest supporting claims is of the physical harms of marijuana. He argues that Heath's tests of the monkey's brain seemed to show conclusive evidence of brain damage; however, he fails to mention that the tests were later discredited: the monkeys were given extremely high doses, doses exponentially higher
While I do feel that Bierson has failed to present conclusive evidence of the harmfulness of marijuana through the points made, it is not a proper statement to claim that marijuana is "harmless" either. Even though the properties of marijuana have shown not to be physically addictive, one can become psychologically addicted. However, this is true of just about anything that can give one pleasure, such as chocolate, gambling, or shopping. No substance will be safe for everybody, under all circumstances, or when used in excessive amounts. For example, over-the-counter medications can be deadly for those who are allergic or who overdose. On the other hand, marijuana overdose has never been a sole reported cause of death: the amount of cannabinoids required to have a lethal effect are more than 40,000 times the necessary dosage for intoxication, making it highly
unlikely