The advantages of 3d computergenerated images are most obvious,
the main advantage beeing that the 3 d developer can visualize,anything on his mind. That goes for things that dont exist yet, as well as things that dont exist anymore.
Apart from Hollywood, which is undoubtly unbeateable many documentaries on TV, use this technique to visualize the past or future.
Archeology, architecture , astronomy, medicine..industry, all profit of this fairly new presentation method.
I will demonstrate this on a fiew examples with short explanations. One imideatly recognises to what a valuable tool 3d animation has developed.