[dan-k]

This article is poorly thought out and has little-to-no conception of the difference between theory and reality. For example, many things cannot be made in smaller pieces and then assembled, so size could become a huge barrier to adopting 3D printing for something like, say, construction. Not to mention the energy that such a machine would use. 3D printing will lead to lots of changes in design and democratization of production, I'm sure, but there's still a bigger picture that's completely absent from this article's consideration.