Animation is a fine art that lets you illustrate a concept using movement. However there’s a thin dividing line between mere movement and utter confusion. Imagine a classroom where a teacher moves around the room explaining a concept — as he or she moves, the eye of the students follows him or her. There is a clear focus in the room, and the subject of that focus is the teacher. Now imagine another situation where the teacher and all the students in the room start moving in disparate directions just for the sake of movement — at this point of time, the movement has given way to chaos. The distinction between movement and chaos works similarly on PowerPoint slides — at any point of time, movement needs to have focus and direction, and more importantly, a reason to move!