Consumer: I would like to have the features contained in the latest upgrade to your computer software package, but I am leery of installing the upgrade because a friend has told me he had a problem with it. Company representative: We have distributed nearly 3, 000 copies of the upgrade and we have received fewer than 100 calls saying that it has caused problems. So it is very unlikely that you will experience any problems with the upgrade. The reasoning in the company representative's argument is most vulnerable to criticism because it fails to consider the possibility that ['a significant number of people have experienced problems with the upgrade but have not reported them', 'some of the reported problems were a result of users failing to follow instructions', 'the consumer will experience software problems if the upgrade is not installed', 'some of the problems people have experienced with the upgrade have been quite serious']