As social networks have taken over the internet, live social interaction has diminished as well. Humans need live social interaction for personal development, they don't need to see/view social interaction on t.v., in a movie, or online. There is neurological reaction that occurs when you meet someone for the first time. This can not be duplicated through viewing/obtaining the action from the outside. There is an electrical transference the occurs when shaking someone's hand, or giving them a hug that cannot be obtained through "poking" someone online.
I agree with the article that drug use by more intellectual people would be higher in the fact that there is no escaping the mind. The mind needs a break periodically, and rest for the mind comes in more ways than just sleep. Even while sleeping intellectual people are still calculating and/or working on projects.