If a picture is worth a thousand words, then a video must be worth at least a million.
When trying to describe a system or mechanism, a series of images would be helpful, but if the system involves motion or action an animation is so much easier to understand.
Take this animation for example. In this case we needed to quickly and effectively explain the mechanism of modern robotic surgery and how the surgeon controls the robotic instruments remotely while seated at a control console.
Utilizing animation, we could show how the surgeon manipulates the hand controls of the console and how this results in movement of the instrument arms of the robot. Furthermore, a 3D view inside the patient combined with an inset enlargement of the surgeon’s hands allows us to clearly show the fine movement control permitted with this system.