High school thesis sentence

Read the excerpt from it's our world, too! : young people who are making a difference. the author’s purpose in this excerpt is to

What is the reasoning in this argument?

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