Read the excerpt from Fast Food Nation . The strict regimentation at fast food restaurants creates standardized products. It increases the throughput. And it gives fast food companies an enormous amount of power over their employees. “When management determines exactly how every task is to be done . . . and can impose its own rules about pace, output, quality, and technique,” the sociologist Robin Leidner has noted, “[it] makes workers increasingly interchangeable.” Which type of evidence is Schlosser using in this excerpt?