If you asked me what I'd like to 3D-print, I'm certain 'a gun' would be the last thing on my list. However, yesterday in the US, the first 3D-printed gun was fired successfully. Scarily, the makers want to put the blueprints on the internet, so anyone with a good enough 3D printer can make and assemble a gun at home.
I don't know about you, but I feel this is open-source software taken one step too far. Should there be limits on what can be free for all to use on the internet?