• 2022-06-15
    Ken向一家冰淇淋店走去。侍者:今天我们有香草的和巧克力的。Ken:我要香草的。侍者:我差点忘了。我们也有草莓的。Ken:这样的话,我要巧克力的。Ken违背了决策的标准特征吗?(提示:再读一下有关阿罗不可能性定理的那部分内容。)
  • 阿罗不可能定理包含两项重要假设:每个人的偏好是可以排列的;每个人的偏好次序是可以过渡的。Ken违背了其他不相关选择的独立性假设。先前只有香草和巧克力时,他偏爱香草。多了草莓这个选择不应该诱使他改变想法而选择巧克力。

    内容

    • 0

      Lulu saved Mr. Ken Richards by _______.

    • 1

      根据顾客如下购买冰激凌时的三种要求,写出检索表达式:• 1.要求草莓、香草、巧克力三种口味• 2.要求草莓、香草、巧克力任一种口味• 3.要求草莓、香草但不含巧克力口味的

    • 2

      将用户ken的密码修改为queen1。

    • 3

      Ken: How was your summer, Bianca? Bianca: It was pretty (1) __________. I had a part-time job at a (2) ______. Ken: Did you enjoy working there? Bianca: Yes, I did. I really got to know some of the (3) __________. How about you? Ken: I had a part-time job during the summer, too. It was great. Bianca: Really? What were you doing? Ken: I worked part-time as a (4) __________at the (5) ______. Bianca: Cool. Ken: It was amazing… I hope I can do it again next summer.

    • 4

      你知道海格第一次请哈利吃的是什么冰淇淋吗() A: 巧克力加覆盆子和碎果仁冰淇淋 B: 巧克力加香草和碎果仁冰淇淋 C: 咖啡加覆盆子加碎果仁冰淇淋 D: 咖啡加香草加碎果仁冰淇淋