In Washington, everybody knows about unintended consequences: the outcomes you fail to anticipate when you change the way something works. But there's another phenomenon that works somewhat in reverse: Preregulatory paranoia, or the fear that new rules meant to make the system better will instead produce mayhem and disaster. SNIP SNIP Still, the overheated claims and counterclaims about healthcare reform have produced widespread confusion about what the new legislation will actually do. Here are a few of the most overblown concerns: SNIP SNIP 1) The government will take over one sixth of the economy. That would be alarming if it...