I'm not sure I buy the binary approach to this, nor his experience with "extroverts."<p>One, I'm not really one or the other; 23andme quizzes claims I'm extroverted, Meyer Briggs claims I'm introverted. I actually went around and asked people in my high school what they thought I was, and all the teachers thought I was an extrovert and all the students thought I was an introvert. Apparently it's situational.<p>And like the author, I often get tired of talking to people. But usually it's a result of conversing with someone who is extremely talkative. Sure, those people don't seem to <i>get</i> that you are not into talking... but <i>not</i> because they're extroverts. It's because they're socially disabled. Only someone who can't read facial cues will keep chattering away at you. Most people can see I'm getting weary and will stop.<p>I think this guy met one to many people who basically can't tell that you're just not interested in speaking with them, and confused them with "extroverts."