A few days ago I asked Adam Weinstein to help our nation's beleaguered press corps and provide them with a short, simple primer on guns and gun terminology. Today he comes through with "A Non-Gun-Owner's Guide to Guns." Check it out if you want to be able to talk about guns without instantly incurring the wrath of gun owners everywhere. It's nothing more than the level of knowledge you'd expect someone to have about, say, global warming or Social Security if they were holding forth on those subjects. It's always good to know the basics.