Most cases don’t settle, or are very challenging to settle, and end up in trial because there are grey areas in the case - situations or testimony which can be interpreted in different ways. Computer animation is often thought of as an effective, albeit expensive, way to show events. Research tells us, however, that there is a much more compelling reason to use computer animation.
Computer animation makes your interpretation of the event or situation concrete. There is always flux, indeterminate issues within any accident or event reconstruction, which the opposing experts will argue at length. But once the jurors see and hear for themselves your version of said reconstruction, they are far more inclined to believe it. And computer animation is an easy, immediately understandable, way to present your belief of “what happened” in a way that makes it real.
That being said, the facts must be solidly incorporated into the animation. Jurors will pick at the slightest incongruence between the known facts (skid marks, length of surgical incision) and the animation, and the persuasiveness of your animation will be destroyed.