"Inherent in the notion of regulating a technology is the regulatability of that technology. It's the idea that you can figure out who's making or using a technology and dictate terms to them. That's where computers come in. Computers make it possible for semi-skilled people to do jobs that used to require highly skilled people."
Excellent article by Cory Doctorow in The Guardian on 3D printed guns.
"Bad cases made bad law, and it's hard to think of a more emotionally overheated subject area. So while I'd love to see a court evaluate whether the internet should be treated as a library in law, I'm worried that when it comes to guns, the judge may find himself framing the question in terms of whether a gun foundry should be treated as a library."