Read this excerpt: kroc's years on the road as a traveling salesman carrying his own order forms and sample books, knocking on doors, facing each new customer alone, and having countless doors slammed in his face no doubt influenced his view of humanity. "look, it is ridiculous to call this an industry," kroc told a reporter in 1972, dismissing any high-minded analysis of the fast food business. "this is not. this is rat eat rat, dog eat dog. i'll kill 'em, and i'm going to kill 'em before they kill me." what is the most likely reason schlosser uses a direct quotation in this excerpt from fast food nation?