Sedaris's CP

I felt that Sedaris's controlling purpose is to point out what we as humans do without us consciously knowing it, and that is judging people. I felt that because through out the text her hears people judging everything to politics, fashion and parenting styles. I believe that it is true. But i also felt a hint of his controlling purpose to also be talking about how we persuade others into thinking that we are right, The reason being is because he even states it in last page of his article in the top few paragraphs, "If my own little mind is nailed shut, why wouldn't theirs be?" (Sedaris 277) that had made me think that we use judging as a persuading kind of thing to others as well. "Don't tell me I don't know how to hate." (Sedaris 277) Found in the middle of the last column of the article.