Explanation: Color is determined by Hue, Saturation, and Lightness and can manipulate depth on a 2d surface (like a television screen). This is used a lot in art to visualize depth perception. Modeling is a term of manipulating use of ”lightness” (of color) on positive space to make it appear closer or further away. Movement is most notable by something that can move in a 3d setting. In a 2d setting you can only really move left or right. With a 3d setting you can manipulate the positive space using different techniques.
Star Wars has fully explained why the Death Star took 20 years to make. The Empire's greatest super-weapon, the Death Star was actually in the works long before Palpatine even officially founded the Empire.
