Can one attack the stated premises of the argument?

by **ranjan.mittal** Mon May 12, 2014 3:12 am

Is it correct to attack the stated premises of the argument?

For example in the AWA (taken from AWA topics from MBA.com website) mentioned below:

"The falling revenues that the company is experiencing coincide with delays in manufacturing. These delays, in turn, are due in large part to poor planning in purchasing metals. Consider further that the manager of the department that handles purchasing of raw materials has an excellent background in general business, psychology, and sociology, but knows little about the properties of metals. The company should, therefore, move the purchasing manager to the sales department and bring in a scientist from the research division to be manager of the purchasing department."

Can one attack that delays saying that delays may have been caused by another reason not largely due to poor planning.

Is it ok to attack the argument in such a way?