Day 35 One month ago, all the showerheads in the first three buildings of the Sunnyside Towers complex were modified to restrict maximum water flow
The following appeared in a letter from the owner of the Sunnyside Towers apartment complex to its manager.
“One month ago, all the showerheads in the first three buildings of the Sunnyside Towers complex were modified to restrict maximum water flow to one-third of what it used to be. Although actual readings of water usage before and after the adjustment are not yet available, the change will obviously result in a considerable savings for Sunnyside Corporation, since the corporation must pay for water each month. Except for a few complaints about low water pressure, no problems with showers have been reported since the adjustment. I predict that modifying showerheads to restrict water flow throughout all twelve buildings in the Sunnyside Towers complex will increase our profits even more dramatically.”
Write a response in which you discuss what questions would need to be answered in order to decide whether the prediction and the argument on which it is based are reasonable. Be sure to explain how the answers to these questions would help to evaluate the prediction.
五问：
（1）“One month ago, all the showerheads in the first three buildings of the Sunnyside Towers complex were modified to restrict maximum water flow to one-third of what it used to be. Although actual readings of water usage before and after the adjustment are not yet available”和“the corporation must pay for water each month. Except for a few complaints about low water pressure, no problems with showers have been reported since the adjustment”是事实，“I predict that modifying showerheads to restrict water flow throughout all twelve buildings in the Sunnyside Towers complex will increase our profits even more dramatically”是结论，值得反驳吗？
（2）减少最大用水量，就意味着总用水量一定会下降吗？是否可能存在这样的情况：因为最大出水量变小了，人们不得不在淋浴时花费更长的时间，从而导致用水量更多？另外，淋浴用水占总用水量的比例是多少呢？可能洗衣服消耗的水比淋浴更多，那么只限制淋浴用水量并不能节约多少水费。
（3）水费只是诸多费用之中的一个，利润还可能由哪些因素决定？你能具体地罗列一下吗？并说说这些因素将如何影响利润。例如：利润应该主要靠卖房和租房来获取，水费仅仅是其中很小的一部分费用。
（4）没有抱怨就意味着人们一定是满意的吗？是否可能存在这样的一些人，他们虽然没有说出来，但心中非常地不满意。这样是否可能会得不偿失呢？
（5）把前三栋楼的政策推广到其他楼房，就能获得相同的效果吗？住在不同楼里的居民的偏好是否可能并不一样，从而导致不一样的结果呢？对于喜欢用浴缸的居民来说，改良 showerheads也是没有效果的。
