argument187【snickers小组】提纲作业帖

zhangwanyingUID: 2775533

周一 12月6日
argument 187

187 - The following appeared as part of an article in a health magazine.

"A new discovery warrants a drastic change in the diets of people living in the United States. Two scientists have recently suggested that omega -3 fatty acids (found in some fish and fish oils) play a key role in mental health. Our ancestors, who ate less saturated fat and more polyunsaturated fat, including omega -3 fatty acids, were much less likely to suffer from depression than we are today. Moreover, modern societies-such as those in Japan and Taiwan-that consume large quantities of fish report depression rates lower than that in the United States. Given this link between omega -3 fatty acids and depression, it is important for all people in the United States to increase their consumption of fish in order to prevent depression."

zcsdtcUID: 2875047

○1祖先患抑郁症少的原因未必是饮食，社会生活压力不同，环境不同。即使是饮食，没有证明就是omega-3导致的。
○2多消费鱼产品，会帮助预防depression，但不一定是鱼的功劳，因为还有其他的饮食的区别，或许是其他的消费多的食物导致的，不是omega-3的功劳，或许是其他物质的功劳。
○3样本差异。即使日本和台湾适合，美国不一定适合。即使适合也未必所有人都适合。
4，日本和台湾上报的人数少，可能是有瞒报的行为。

浮云柳絮UID: 2808889

1.没有证据说明omega -3 fatty acids has any connection with health,for the evidence given in the argument that the ancestors in the United States suffered less depression is unconvincing, considering that the environment of old times differenciate from nowadays'.  
2.错误类比，美国和日本台湾的情况不同, 不能因为日本和台湾吃鱼病例少就推广到美国。两地气候不同环境不同人的体质不同，不能错误类比
3.考虑不周，很可能吃鱼的做法在美国难以开展比如美国人不喜欢吃鱼等等。

zhangwanyingUID: 2775533

187 - The following appeared as part of an article in a health magazine.

"A new discovery warrants a drastic change in the diets of people living in the United States. Two scientists have recently suggested that omega -3 fatty acids (found in some fish and fish oils) play a key role in mental health. Our ancestors, who ate less saturated fat and more polyunsaturated fat, including omega -3 fatty acids, were much less likely to suffer from depression than we are today. Moreover, modern societies-such as those in Japan and Taiwan-that consume large quantities of fish report depression rates lower than that in the United States. Given this link between omega -3 fatty acids and depression, it is important for all people in the United States to increase their consumption of fish in order to prevent depression."

（1）首先，科学家只是发现有一些鱼的体内发现了omege-3 fatty acids，并不代表所有的鱼类中都普遍带有这种物质；并且只是说play a key role in mental health, 而没有说对于抑郁症有效。
（2）没有证据表明故人更少的抑郁症，即使承认古人the ancients更少得抑郁症，也不能确定是因为更多食用多重不饱和脂肪酸。现代社会和古代社会的社会体制community organization, economic level,还有life style 都是不一样的，所以作者不能将附带古代人更少的抑郁归结为饮食习惯food habit。
（3）report depression rates lower than that in the United States并不代表日本和台湾有更低的抑郁症发病率in reality，首先作者没有说明日本人和台湾居民食用的鱼类当中有omega-3 fatty acids，并且没有证据表明抑郁症的发病率低和更多地食用鱼类有关。作者没有排除其他的可能性，比如人种差异，生活习惯，饮食结构，生活环境living environment。
（4）即使食用这种脂肪酸对防止depression有一定的作用，但是没有必要所有的美国人都加大鱼类的食用量，并且过于武断地预测the diets fo people living the United States will change drasticly.