V1(BY: yuanyuanblue) 一个杂货店增加了pharmercy sector，sales提高，所以管理层猜测观众想要的是方便，所以扩大产品线会增大profit,计划增加clothes section and resteraunt,变成大而全的百货有助于增强区域里的competive advantage.
The following is part of a business plan created by the management of the Megamart grocery store.
“Our total sales have increased this year by 20 percent since we added a pharmacy section to our grocery store. Clearly, the customer’s main concern is the convenience afforded by one-stop shopping. The surest way to increase our profits over the next couple of years, therefore, is to add a clothing department along with an automotive supplies and repair shop. We should also plan to continue adding new departments and services, such as a restaurant and a garden shop, in subsequent years. Being the only store in the area that offers such a range of services will give us a competitive advantage over other local stores.”
2. False analogy：药剂销售与汽车配件、维修店类比
3. All things are equal : 今年的销售增加纵向错误类比今后两年销量会增加
4. Gratuitous assumption：无端假设销售额增加是因为顾客关注一次性购物便利
The management of the Megamart grocery store concludes that adding new departments and services is the surest way to increase profits over the next couple of years. They are led to this conclusion because of a 20 percent increase in total sates, realized after the addition of a pharmacy section to the grocery store. On the basis of this experience, they concluded that the convenience of one-stop shopping was the main concern of their customers. The management’s argument is faulty in several respects.
In the first place, the management assumes that the increase in total sales was due to the addition of the pharmacy section. However, the only evidence offered to support this conclusion is the fact that the addition of the pharmacy preceded the increase in sales. But the mere fact that the pharmacy section was added before the increase occurred is insufficient grounds to conclude that it was responsible for the increase. Many other factors could bring about this same result. Lacking a detailed analysis of the source of the sales increase, it would be sheer folly to attribute the increase to the addition of the pharmacy section.
In the second place, even if it were the case that the increase in total sales was due to the addition of the pharmacy section, this fact alone is insufficient to support the claim that adding additional departments will increase sales even further. It is quite possible that the addition of the pharmacy section increased sales simply because there was no other pharmacy in the vicinity. The additional proposed departments and services, on the other hand, might be well represented in the area and their addition might have no impact whatsoever on the profits of the store. In other words, there may be relevant differences between the pharmacy section and the additional proposed sections that preclude them from having a similar effect on the sales of the store.
In conclusion, the management’s argument is not well-reasoned. To strengthen the conclusion, the management must provide additional evidence linking the addition of the pharmacy section to the increase in total sales. It must also show that there are no exceptional reasons for the sales increase due to the pharmacy section that would not apply to the other proposed additions.