I can't help thinking about a quote from Uncle Bob (Robert C. Martin at ObjectMentor): When a customer comes up to you with his cell phone and says: "I need a bigger antenna!" You should think "He needs better reception on his cell phone" and not "He wants the mother of all cell phone antennas, 'cause it is 15 inches long" You should always ask yourself, "Why do they want that?", try putting yourself in your customer's shoes.