argument19

19The following appeared in a letter from the manager of a rock band named Double Rice.

"One year ago, tickets for Double Rice's concerts in stadiums around the country took, on average, at least 24 hours to sell out, if they sold out at all. But the band has been enjoying a surge in nationwide popularity among 14 to 25 year olds, and the 30,000 tickets for a recent concert in Megalopolis sold out in 12 minutes. Clearly the ticket sales in Megalopolis are a result both of the band's increased popularity and of the advertising campaign run in Megalopolis by the Ad Lib advertising agency. Thus, in order to ensure that the band's success in Megalopolis is repeated across the country, the band should hire Ad Lib to duplicate the Megalopolis ad campaign on a nationwide scale."

1.M地区票卖得好可能是由于M地区14-25岁的人口比重比较大，而对于全国来说这部分的人口比重可能并不大，所以M地区的成功不能推广到全国。

2.作者并没有给出M地区票卖得好是因为广告做的好的证据，也许有可能根本就是DR乐队本身的流行问题。

3.即便M地区的成功可以归功于广告的功劳，A的宣传工作做的很好，使得门票销售的很快。但是没有证据能表明A在其他城市也能做的很好。

4.作者只提到了A公司，有可能除了A公司之外，会有更好的公司，以及比雇佣A公司更低的费用。