Mark Cossey, Mission Transition, 2012
A transition that has been designed to be slow can feel awful. When designing an application, an interface or any type of structured content, we must ensure that users understand where they have come from as they arrive at the new page or state. The transition from one screen or group of content to another should feel natural and should be tested on devices of varying power and speed to get a wider view of how the transition feels. Too fast, and it may appear broken or jumpy; too slow, and it will be frustrating to use.