No, I am not referring to films, although I like the sound of "Atlas Shrugged 3D." (hint-hint) I attended a conference recently and saw a demonstration of a 3D printer. And every week, it seems, someone is coming up with a new use for it such as making artificial ears, skulls, girlfriends (okay I exaggerate on this one, but stay tuned), and so forth. This article presents the 3D phenomenon relative to the personal computer, a comparison that is perhaps insightful. You will want to study the charts.