Six murders a week, I was thinking.

In the book Born To Run, Christopher McDougall uses a number of different rhetoric devices. The one most commonly used is pathos combined with manipulation of the climax through uncertainty and excitement. In  his book McDougall writes,
The truck stopped (Part of the Mexican drug cartel). I cut my eyes hard left and saw Salvador was straight ahead, his hands frozen on the steering wheel. I darted my eyes forward again and didn't move a muscle. We sat. They sat. We were silent. They were silent. Six murders a week, I was thinking. Burned his balls off. I could see my head rolling between panicky stilettos on a Chihuahua dance floor. Suddenly, a roar split the air. My eyes slashed left again. The big red Dodge was spitting back to life and growling on past.
In this passage McDougall describes his encounter with the Mexican drug cartel on his adventure to the Copper Canyon. The passage is only the tip of the climax, McDougall has been building up for this during the previous couple of pages. His display of the events exposes the reader to a very exciting chain of events leading towards some thing greater, which as well is enhanced by the events through out the book. Although some events may be overrun with hyperbole, the author makes sure to keep your attention at all times. The second rhetoric device used in this passage is pathos. He attempts to connect with the reader emotionally by placing himself among the images of the people killed and tortured by the cartel. His explanation of the situation is very visual as well helping the reader imagine the emotional buildup during that encounter. The pathos combined with the well supported climax make a splendid combination. They complement each other making the book easier and more joyful to read.
In this book Christopher McDougall creates argument that shows up in multiple ways throughout the book. Both the presentation of the running world today versus the Tarahumarans and his incredible journey that according to him defeated many set stage for the argument.  In my perspective McDougall argues that there are no impossible tasks. As long as you set you mind straight and aim for the goals, you will complete what you have set out to do.