"It assist in dividing, isolating and dumbing down America"
Ok, lets try that again, How So? Just making the statement means nothing, explain your statements.
Visual signs of long-term pot smoking are poor motor coordination, uncontrolled laughter, a lag or hesitation between thoughts, and unsteady hands. At one time, these were all thought to be short-term side effects--now known in many cases to be long-term with frequent use, according to a 1968 study by researchers W.H. McGlothin and L.J. West, published in the Hazelden booklet mentioned above. Other linked side effects include a symptom called amotivational syndrome, in which people become passive, apathetic, unmotivated, hedonistic, unconcerned about the future, unable to make plans and increasingly introverted.