Rothbard has gaps, but he's light-years past most.<p>Never trust "historical evidence" when it comes to economics. There are no controlled experiments, and the winners write the books. In this case, there are four concepts masquerading as two. See <a href="http://news.ycombinator.com/item?id=1058639" rel="nofollow">http://news.ycombinator.com/item?id=1058639</a>.