The UI Patterns card deck is a library of different ways of solving common design problems. By also rationalizing about how, when, and why such solutions should be used, the deck of design patterns will help end feature debates, provide a shared design language among your peers, and help you get a clear understanding of why you’re doing what you’re doing, and why you’re not doing what you’re not doing. Design patterns save both you and your users time. You will save time by not reinventing the wheel. Users save time by not having to learn new interface systems.