这篇AA怎么写，求救！！！

Xiaotongdi

"It is a popular myth that consumers are really benefiting from advances in agricultural technology. Granted -- consumers are, on the average, spending a decreasing proportion of their income on food. But consider that the demand for food does not rise in proportion with real income. As real income rises, therefore, consumers can be expected to spend a decreasing . proportion of their income on food. Yet agricultural technology is credited with having made our lives better”
刚刚做到这篇AA，想了好久啊，觉得好难写！有谁可以帮忙看看从何入手！或者想多几个错误？

Xiaotongdi

自己飘过！~我写了忽略他因，然后还有必要性，还有木有其他错误呢？

xiaoqiaoli

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。

sukieyy

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)

LS好厉害啊！！你是怎么分析出来的。。。我咋连看都没看出来那3点呢晕。。。。

xiaoqiaoli

LS好厉害啊！！你是怎么分析出来的。。。我咋连看都没看出来那3点呢晕。。。。

-- by 会员 sukieyy (2011/5/17 15:14:44)

呵呵~~没有啦~~我也是读题读了很久才总结出来的~~总觉得这个题没有太多的硬伤类的错误~有些错误不太好说~~我倒是一直都觉得gratuitous assumption 是很好用的，在很多时候的一些逻辑错误都可以转化为前提错误~~

不过我分析的那个速度要是到了考场上怕是不行了，所以考前的寂静还是一定要看的~~~

lnl555

我怎么感觉分析的不对啊。。。

carlicema

觉得这样分析好像不太对？
开头不是说“It is a popular myth that consumers are really benefiting from advances in agricultural technology”吗？这里作者不是认为技术的benefit是一个误论吗？

第二句是一个让步，说现在人们用于购买食物的收入比重更少了。

然后说对食物的需求并没有跟实际收入成比例地增加，在实际收入增长的情况下，食物消费的比重肯定会下降啦，有没有技术都是一样的。

最后，“Yet agricultural technology is credited with having made our lives better” YET是表否定，说技术实际上并没有让生活变好。
我觉得可以这样写：

1、  针对benefit的定义：没有降低价格就是没有实际benefit？可能技术的benefit并没有体现在价格上，比如提高了质量也是benefit；况且，价格也并不是单单由技术决定的，可能人口多了需求大了价格就涨了，如果没有技术的话，说不定价格更高；

2、  无根据假设：Real income真的涨了吗？没有证据表明real income真的涨了。也有可能real income是因为农业技术的进步而涨的，比如整体农业产业通过技术提高了利润。没有证据表明real income有没有涨以及real income的增长跟农业技术没有关系，这个结论是站不住脚的。