最后摘录《Free to choose》书中序言的一段话，与诸君共勉： Television is dramatic. It appeals to the emotions. It captures your attention....Anyone who is persuaded in one evening (or even ten one-hour evenings) is not really persuaded. He can be converted by the next person of opposite views with whom he spends an evening....You must turn the issues over in your mind at leisure, consider the many arguments, let them simmer, and after a long time turn your preferences into convictions. 所有在一夕之间被你说服的人，并不是真的认同了你，他可能在另一夕间，经由和另一人的短暂相处，轻易改换门庭。 电视节目充满戏剧性，它强化人的情绪，吸引人的注意力，在节目效果下得到的认知并不可靠。 你必须让这些观点在脑海中回荡，闲暇时挑出来细想片刻，从各种角度提出强有力的质疑并为其辩护，缓缓酝酿，直到某一天，对它的偏好质变成某种确信。