Why should design be flat?

Sketching our ideas out on paper is a start to every project, but that doesn't mean the design has to stay there. On paper. Why not have it jump out of the 2D world? Make it tumble and spin across a page? Stand up and apart from everything else? I ask myself this at the start of every project, and almost never find a single reason not to take a paper sketch and make it 3D. Most of my personal work is in 3D design, while much of my professional work is done in Branding and Web. Every so often I find a way to mix the two together.