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OG17 CR662
Vargonia has just introduced a legal requirement that student-teacher ratios in government-funded scholls not exceed a certain limit. All Vargonian children are entiled to education, free of charge, in these schools. When a recession occurs and average incomes fall, the number of Children enrolled in government-funded schools tends to increase. Therefore, though most employment opportunities contract in economic recessions, getting a teaching job in Vargonia's government-funded schools will not be made more difficult by a recession.
Which of the following would be most importent to determine in order to evaluate the argument?
A Whether in Vargonia there are any schools not funded by the government that offer childern an education free of charge?
B Whether the number of qualified applicants for teaching positions in government-funded schools increases signnificantly during economic recession.
1. 找出argument & line of argument
法律限制政府学校学生/老师比率。经济不好时,政府学校学生人数增加,所以经济不好时政府学校老师工作还是不会更难找。
2. 分析逻辑
两个逻辑事物
A (经济不好时)政府学校老师职位增加(学生人数增加+政府学校学生/老师限制)
B (经济不好时)政府学校老师工作不会更难找。
想像一下,如果和朋友争辩
找茬 - 老师职位是增加,但不一定更好找啊。经济不好时,找工作的人更多
3. 答案
B - 就是这个找茬
A 常见的一个无关。逻辑推理中一般是假设前提已成立,这里就是假设A学生人数增加成立。辩论主要是能否从假设A推到B。偶尔也有找茬说A其实并不成立,但是那样应该说的非常清楚的把A给削弱。
看答案A。即使有别的学校也给免费教学,并不能削弱A。这些别的免费学校平时也是有学生的。经济不好时,去免费学校的学生增加,那可能是所有这些免费学校的学生都会增加。所以假设A还是可以成立的。这个也更符合现实情况。
一般情况下,不要去考虑推翻假设。如果假设都推翻了,那这个辩论不就是浪费时间比较低质量的吗?
关键是找到A->B,然后集中逻辑思维在A->B来考核答案
Richard 770 逻辑答题讨论
http://forum.chasedream.com/foru ... amp;fromuid=1294035
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