It’s not your parents’ marijuana. Regarding Paul Armentano’s op-ed essay on April 11 in support of legalization of recreational marijuana use, consider the source carefully. As noted, he’s deputy director of the National Organization for the Reform of Marijuana Laws (NORML). It’s his job to campaign for legalization, and he was given ample space for his cause. THC, the psychoactive component in marijuana, works by over-activating cannabinoid receptors in the brain, producing a high while also causing difficulty with thinking, problem-solving and memory. In the 1970’s, marijuana plant material (weed) had a THC content of about 2-3%.