Hi all,
Just started AWA prep. Appearing for GMAT in 5 days. Please let me know your inputs. Thanks in advance and stay safe.

Prompt
“We have learned from an employee of Windfall, Ltd., that its accounting department, by checking about 10 percent of the last month’s purchasing invoices for errors and inconsistencies, saved the company some $10,000 in overpayments. In order to help our clients increase their net gains, we should advise each of them to institute a policy of checking all purchasing invoices for errors. Such a recommendation could also help us get the Windfall account by demonstrating to Windfall the rigorousness of our methods.”
Response
The member of a financial management and consulting firm states that the firm should advise all its clients to institute a policy of checking all purchasing invoices for errors. According to the member this will lead to an increase in net gains for the firm's clients as it led to savings for Windfall, Ltd. As it stands, the argument seems to commit the mistake of i) correlating savings to net gains, ii) extrapolation of net gains for all clients based on observation of one company, iii) data bias as it bases the conclusion on only 1 months observations
First, the argument readily assumes that any savings in overpayments is directly related to net gains. It fails to account for additional costs that might have been incurred to check the invoices for errors and inconsistencies. For example, although Windfall saved $10,000 in overpayments, it might have had to hire 2 additional people to check for the errors which would have cost Windfall $15,000. In this case, there would be a net loss vs. net gain. Had the argument been inclusive of the costs incurred to realize the net gains, the argument would be able to defend the monetary value proposition of implementing such a policy.
Second, the argument mentions this policy will increase net gains for all clients. This depends on the assumption that the other clients make the same mistakes in invoices as does Windfall, Ltd. This seems to be a stretch as it doesn't account for any company-specific factors which might have led to the inefficient invoicing in Windfall, Ltd. For example, it could be that Windfall still operates all of its invoices manually which leads to errors vs. the other companies might be using software/tools which are more accurate. In this case, the net gains wouldn't be the same for other clients and the effort (both time and money) spent to institutionalise this policy would be fruitless. Had the argument drawn a correlation between the causes of errors and inconsistencies in invoicing across both Windfall and other clients, it would be more logical to expect net gains from a similar policy.
Third, using impact from just one month of data to generalize the impact across all time periods is a big leap of faith. There could be multiple other factors that drove one-time inconsistency in invoicing during the period of last month. For example, the main person handling invoices could have been on leave, system changes, etc. If the argument included research over a broader period of time leading to similar results, the savings potential would be more real.
Overall, because of the reasons mentioned above the argument is logically flawed and has used multiple extrapolations to arrive at a hasty conclusion. The premises of the policy implementation need to be strengthened and backed by data across multiple time periods and more companies. Without this, the argument is open to debate.