In designing a system for a customer already familiar with an existing one variation is the chief cooperate of poor quality.Discuss

Start by definding the meaning of both variation and quality.So variation is a partial change or technological improvement in form,position,state and even quality and the term quality on the other hand is the value given to the output of a system after the laid down specifications has been met.Usually the quality of a system is often determined by the customer or the user of the system.
Then talk about the variations between the new system and the old system.

Comment on the variations in the new system if the it can have a great deal of influence on the old system then decide if these variations can lead to poor quality.