The document discusses the history and evolution of 3D animation from early claymation techniques to modern computer-generated 3D animation. It notes that claymation was an early 3D animation technique that was time-consuming. In the 1960s, William Fetter created the first 3D representation of the human form used in short films. In 1986, George Lucas sold Lucasfilm's computer graphics division to Steve Jobs, who renamed it Pixar Animation Studios and helped pioneer 3D computer animation. The document then contrasts 2D and 3D animation techniques and provides examples of industries that use 3D animation.