Different people think of Al differently "The automation of]activities that we "The study of mental faculties through associate with human thinking,activ- the use of computational models" ities such as decision-making.problem (Charniak+MeDermott,1985) solving.learning..."(Bellman.1978) "The study of how to make computers "The branch of computer science that do things at which,at the moment.peo- is concerned with the automation of in- ple are better"(Rich+Knight,1991) telligent behavior"(Luger+Stubblefield. 1993) Views of Al fall into four categories: Thinking humanly Thinking rationally Acting humanly Acting rationally The textbook advocates“acting rationally(理性的)" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Different people think of AI differently The textbook advocates “acting rationally (理性的)