Gun control advocates have one word for us: plastics.  But unlike the advice given to Dustin Hoffman's character in The Graduate, they are advising us not of the bright future for the material, but of its mortal threat to our existence. First, we were warned that plastic straws will doom sea life and the planet.  Now we are told that, while waiting for your seafood dinner, someone is likely to burst into the restaurant and kill you with a 3-D printed gun. We don't have flying cars just yet, but we do have the ability to "print" 3-D objects from blueprints and drawings using special equipment.  Hysteria greeted the announcement that one company would be allowed to publish downloadable blueprints for a gun: Eight states are filing suit against the Trump administration over its decision to allow a Texas company to publish downloadable blueprints for a 3D-printed gun, contending the hard-to-trace plastic weapons are a boon...(Read Full Article)