Was The Earth 3D Printed?

Probably a stupid idea. Obviously hypothetical. But in my mind, it makes a hell of a lot of sense, solves a lot of problems, and hey, it gives an overpopulated planet some hope. You see, it COULD HAVE been manufactured, and by considering the idea that a planet such as ours was created from the inside out by an advanced race really opens the door to a number of different possibilities that have never been fully considered. And they are good possibilities for our future. Really good. In fact, in my mind, it modifies our perception on what is possible both in our past...and in our future.