The book is an except of the first person narrative. The person continuously insists that he is insane. In fact, to be more precise, the disease causes him to have an uncontrolled sense of nervousness and an overacutness of the senses. In fact, the narrator acknowledges that he possess a sharper hearing sense than before.
because he acts a certain way or says certain thing to give of the apperince or the feel of being indea and pirzada is suprised to find out he is not indian