Suppose you are a psychologist or a psychiatrist. No psychologist would ever say, 'I know precisely what this person will do an hour from now, a week from now, or a year from now.'
「一個再怎麼高明的心理學家，也無法預知某個人下一小時、下一星期的行為，但物理學家卻可依循單一事件努力追索，進而清楚呈現出宇宙的樣貌。