That you should feel angry enough to do something about it because humans have spread out across this globe to the point that we have destroyed the survival of an entire species. Notice that the benefit to you is not as personal as the benefit from an ethos appeal. Your benefit from the social appeal is to feel righteous, good about your choice, that you did the right thing. Notice, also, that as an American living in 1998 what seems right to you may very well differ from what seems right to someone who lived in a different time or now lives in a different culture with different values. Here we get down to the cool dirt of rhetoric.
Authors use logos to touch the audience's reason and understanding about life.
It sure helps if author and audience share fundamental values. It also helps if the author knows his or her audience. The logic, to provide more prep time, will not appeal to every audience. For more about how to talk about logos , see the CDW page. All rights reserved.