It's not about fear, it's about technology. We are going to have to deal with the social issues eventually when it comes to 3d printing going mainstream (which

It's not about fear, it's about technology. We are going to have to deal with the social issues eventually when it comes to 3d printing going mainstream (which there is no reason it wouldn't.) I think the intention of the article is to say: 'Look at this. What happens when we can 3D print anything we need? What happens then?' - A gun would be one of the hardest things to print due to the strength needed.