The lesson I learned in 1985, when I was first tasting the freedom of adulthood and emerging from the safety of home and hearth, is that it's possible to achieve a state of personal isolation while remaining a member of society.
Unfortunately, although the topic seems interesting to me, maybe the kick-off isn't. If you read the entire entry, the way he was a member of society while being isolated was ... keeping his dorm room open sometimes? And the way some people are not members of society is ... texting during a movie? So, apparently, it's just a build up to one of his pet topics, distracting people in a movie theater.
For the question in general, it seems to me like it'd be inevitable to self-identify less as a member of society the more isolated you are from it.
