LAST-4-1-3

Mayor of Plainsville: In order to help the economy of Plainsville, I am using some of our tax revenues to help bring a major highway through the town and thereby attract new business to Plainsville.
Citizens' group: You must have interests other than our economy in mind. If you were really interested in helping our economy, you would instead allocate the revenues to building a new business park. Since it would bring in twice the business that your highway would.

3. The argument by the citizens; group relies on which one of the following assumptions?

(A) Plainsville presently has no major highways running through it.

(B) The mayor accepts that a new business park would bring in more new business than would the new highway.

(C) The new highway would have no benefits for Plainsville other than attracting new business.

(D) The mayor is required to get approval for all tax revenue allocation plans from the city council.

(E) Plainsville's economy will not be helped unless a new business park of the sort envisioned by the citizens' group is built.

Key is B. Why is C wrong? C说highway除了吸引新的business外没有别的benefit。取非，如果highway还有别的benefits，那么group那些人说因为“a new business park would bring in twice the business that high way would" 所以要修business park就不一定成立了，因为highway还有其它的benefit，可能是business park没有的。

感觉B只是把group的论据重新说了一次。不能作为assumption。

B is not a mere repeat of the group's opinion. The emphasis of B is on "the mayor accepts".

"可能是business park没有的" You may not add your own assumption into the statement in your own analysis.

哪位大N能给点详细解释吗?

The gap between the mayor's proposal and his real idea.

In fact the citizen gruop made no more than a guess of the mayor's mind.

It's not objectively certain that a new business park will bring in twice the business the highway would. So, in the stimulus, the citizen group said, 'the business park would (not will) bring in...'.

事实上，如果没有其他证据的支持，或是市长本人的承认，the citizen group's 观点非常有可能沦为一种‘诛心之论’。

资治通鉴?!

admire!

我是这样理解的：如果市长不承认建park的好处，那么就推不出市长有别的想法，也就是说，正因为市长承认，建park有twice business的好处，而他确建议修公路，说明他有别的想法！取非。

Citizens' group: You must have interests other than our economy in mind.

B) The mayor accepts that a new business park would bring in more new business than would the new highway

(C) The new highway would have no benefits for Plainsville other than attracting new business.

注意B的“the mayor accepts”,明知故犯。

另外，C不可能为选项，因为在下述非C情况下，仍可满足C's G的“You must have interests other than our economy in mind”——the mayor may have intestests for politics of Plainsville(other than our economy),for example improvement of communication situation. 因此，如果把C作为前提，那么就否定了mayor把非经济的其它因素（为公因素）做考虑的可能，因此，也就否定了“must have interests other than our economy in mind”因为没有其它interests了[剩下的只是私人性目的了]。

本来民众指出的是市长 说“thereby attract new business to Plainsville”时，还有非商业的其它动因，市长还可以解释。现在成了市长贪污受贿了。

提出两个亮点：

1）lsat逻辑题的两方都是逻辑思维，不能随意假定某一方是非逻辑的；

2）由于我们所在的环境，容易让我们联想为mayor是有个人问题的，因此，会自然接受C's G采用带人身攻击的说法，而忽视了LSAT要求的逻辑思维。考试中要杜绝因个人情感产生的此类逻辑误区。