The author asserts the view that development of argricultural technology can improve the lives of residents. The conclusion is based on three assumptions. First of all, the development of argricultural technology can improve the income level of people. Secondly, the increased income level can decrease the ratio of food expenses to total income. Finally, the decreasing proportion of food expenditure to income is an indicator of good lives. However, these assumptions are gratuitous for they are unwarranted from the logical perspective.
然后再根据这三个点分别攻击就可以啦。可以用到他因,必要性的攻击方法呀~~也可以说这个假设的成立与否要看是在那个地方,那个时期~~
还有一个错误~~
对食物的需求是刚性的,但不意味着随着收入增加食物支出在收入的比重会减少。有可能随着收入的增加人们消费更好的食品,从而最终食物支出占收入的比例不变甚至有可能更高。
-- by 会员 xiaoqiaoli (2011/5/15 15:26:23)