21. advertisers, politicians, salespeople—who have to make a living, need practical knowledge to promote their products, and are suspicious of "shadowy" abstract concepts like truth (Kennedy, 1963). is the friend of all those who hate advertisements because they "lie" or stretch the truth. He is on the side of everyone who turns off the television during elections to stop the flow of "political speak,“ or candidates making any argument they can to win election. The Sophists (practical persuaders) Platonic thinking VS