Final answer:
Randy Pausch tells his audience that he is aware of what's going on and not in denial in order to assure them of his understanding of his situation. He wants them to feel comfortable and accepted, and encourages a positive attitude while empathizing with him.
Step-by-step explanation:
Randy Pausch is telling his audience in the book 'The Last Lecture' that he is aware of what's going on and that he is not in denial, to assure them that he understands his own situation. He wants them to remember that he is in a difficult situation, but he does not want them to focus solely on his illness. Instead, he wants them to feel comfortable and accepted, to have a positive attitude, and to empathize with him.
Learn more about Randy Pausch's communication with his audience in 'The Last Lecture'