The following appeared in a memo to the board of the Grandview Symphony.

"The city of Grandview has provided annual funding for the Grandview Symphony since the symphony's inception ten years ago. Last year the symphony hired an internationally known conductor, who has been able to attract high-profile guest musicians to perform with the symphony. Since then, private contributions to the symphony have doubled and attendance at the symphony's concerts-in-the-park series has reached new highs. Now that the Grandview Symphony is an established success, it can raise ticket prices. Increased revenue from larger audiences and higher ticket prices will enable the symphony to succeed without funding from the city government."

Write a response in which you discuss what specific evidence is needed to evaluate the argument and explain how the evidence would weaken or strengthen the argument.

* 这个题目中，自然有许多问题。我们仅以数学问题为例，突破一下这个经典的常见的逻辑疑点。

* 数学问题通常包括（但不限于）：

1）基数/增幅（的具体数字）不明；

2）/份数/每份数不明。

There are a number of problems regarding the numbers and the calculation. 当我们发现一系列问题可以归为一大类的时候，可以干脆以“总—分”的方式（先总说问题是哪一大类/不一定有类型的名称，能说清楚问题本身就可以了，再具体逐个分析）写作。Of those points of doubt, the first is that the private contributions that have doubled are not necessarily a considerable amount of money since there is no information specifying the original amount. The size of the doubled amount depends not only on the two-fold increase but also on the original amount, which may be rather small and thus the twice of which may not be a quite large amount. Likewise, the new highs the attendance has reached are not necessarily high levels. As a matter of fact,since there is a lack of the specific present number of attendants, the new highs are only the comparatives, only representing levels that are higher than those of the past rather than absolute highs. In addition, although the symphony can raise the ticket prices, there is no guarantee of the increased sales. The argument provides no information stating or suggesting that the increased ticket prices will not discourage people from viewing the live performance, which requires a fee. In fact, the number of tickets that will be sold,the other crucial variable that determines the total sales, is subject to the likelihood of this situation.

* 首先，从逻辑的角度看，数学问题，你get到了么？

* 结合指令的要求，evidence的部分被黄色高亮标出了。

* 下划线的部分是把单个句子信息量提升（从而减少句子的数量）的语法现象/结构。