Karen, if Sullivan is indeed trashing introversion, I'm not sure he's assigning introversion to the right people.
This is purely anecdotal, of course, but I've found that overall, it's extroverts that rely on technology to provide nonstop entertainment. Among commuters, especially, it seems that extroverts, who are incapable of amusing themselves without a lot of sensory clutter, are horrified by the thought of sitting alone in an airport or on a bus, etc. without somekind of constant stimulation until they can get back to the TV or the pub. Extroverts are particularly bored by their own company so must rely on music, game boys, and other diversions to pass the time.
