Logos corresponds with the topic of writing in that it is concerned with what?

What is wrong with they follow citation of a book with two authors

Read the sentence from last lecture by randy pausch. all right, so what we’re not talking about today, we are not talking about cancer, because i spent a lot of time talking about that and i’m really not interested. pausch tells his audience this because he wants them to know that

Someone get back to me , i really don’t get this