Libertarians spend their lives accurately predicting the future effects of government policy. Their predictions are accurate because they are derived from Hayek's insights into the limitations of human knowledge, from the recognition that the people who comprise the government respond to incentives just like anyone else and are not magically transformed to selfless agents of the good merely by accepting government employment, from the awareness that for government to provide a benefit to some, it must first take it from others, and from the knowledge that politicians cannot repeal the laws of economics. For the same reason, their predictions are usually negative and utterly inconsistent with the utopian wishful-thinking that lies at the heart of virtually all contemporary political advocacy. And because no one likes to hear that he cannot have his cake and eat it too or be told that his good intentions cannot be translated into reality either by waving a magic wand or by passing legislation, these predictions are greeted not merely with disbelief, but with derision. [...]
If you'd like a taste of what it feels like to be a libertarian, try telling people that the incoming Obama Administration is advocating precisely those aspects of FDR's New Deal that prolonged the great depression for a decade; that propping up failed and failing ventures with government money in order to save jobs in the present merely shifts resources from relatively more to relatively less productive uses, impedes the corrective process, undermines the economic growth necessary for recovery, and increases unemployment in the long term; and that any "economic" stimulus package will inexorably be made to serve political rather than economic ends, and see what kind of reaction you get. And trust me, it won't feel any better five or ten years from now when everything you have just said has been proven true and Obama, like FDR, is nonetheless revered as the savior of the country.