3d printed gun

I thought John Sarik was trying to shake my hand when we met last Spring at the Columbia Laboratory for Unconventional Electronics (CLUE). Instead he was trying to hand me a small tan-colored plastic figurine of smuggler and rouge Han Solo, of Star Wars fame, frozen in carbonite.
3D printing, while definitely impressive, is only one of many new manufacturing technologies. We can't expect machines to fix problems that our society hasn't. Even if 3D printers were flawless and cheap they would only print what we tell them to.