全日制十年制学校高中语文课本第二册《演绎推理》篇举了这样一个例子,来说明推理的过程必须正确,推出的结论才可靠:(1)鲁迅著作不是一天能读完的;(2)《一件小事》是鲁迅著作;(3)所以,《一件小事》不是一天能读完的。结论显然是错误的。错在哪里?文章解析说:上面这个三段论中,“鲁迅著作”在前提(1)、(2)里分别表达两个不同的概念,(1)里表示所有的鲁 The second volume of the full-time 10-year school high school language textbook “Deductive Reasoning” gives an example to illustrate that the process of reasoning must be correct and that the conclusions reached are reliable: (1) Lu Xun’s work is not finished in one day; ( 2) “A trivial matter” is Lu Xun’s writing; (3) Therefore, “a trivial matter” cannot be read in one day. The conclusion is obviously wrong. What is wrong? The article analyzes: In the above syllogism, “Lu Xun’s work” expresses two different concepts in the premises (1) and (2) respectively, and (1) indicates all the