Julian notes the decline of the libertarian “purists”:
If you talk to younger libertarians in particular, it’s just not clear that the rhetoric of “initiation of force” plays a very large role in their thinking at all, at least not as a fundamental political principle from which all else is derived. This is a point I suspect people who were involved in “the movement” in the 70s, say, really don’t yet appreciate fully: For a New Liberty is no longer required reading; there’s a significant chunk of the younger generation that, however radical they might be, have never cracked a book by Rothbard or Rand and might never. You can, I suppose, just stamp your feet and insist that such people are ipso facto not really libertarians at all, like a kind of extreme prescriptivist grammarian who knows that a word “really means” whatever Webster’s said it meant in 1806, even if everyone now uses it differently. This yields some pretty silly consequences: It entails that an anarcho-capitalist utilitarian whose ultimate criterion is aggregate happiness will not be a libertarian “really,” nor will a radical minarchist who takes a Rawlsian “basic structure” approach, where as someone who espouses far more moderate views might be, so long as his foundational principle is the NAP, however watered down for practical reasons. This seems like pointless pedantry: If Rothbardians want to argue that, really, all libertarians ought to prefer their version of the theory, let them argue that, rather than getting tangled in a tedious debate over what “libertarian” really means.
I think the early popularity of Rand and Rothbard in the libertarian movement can be explained by the seductive appeal of the “non-aggression axiom” to a certain class of people, namely highly rationalistic thinkers who value simplicity and consistency in their political philosophy. The Rothbardian view of libertarianism is a kind of ideological chainsaw: take any issue, and you can instantly determine what the right answer is. The guy who’s engaging in “force” is in the bad guy. It’s exciting to find a new ideological tool that allows you to slash and burn through ideological thickets to get to the “right” answer.
The problem is that the same conceptual elegance that makes Rand and Rothbard so compelling to 16-year-old boys makes it utterly unpersuasive to the vast majority of people, most of whom believe politics is too complicated to be summed up in one sentence. If you don’t find the non-aggression axiom compelling on first hearing it, you’re not likely to be persuaded by further argument.
The seductive simplicity of the Axiom absolutely cripples libertarians who try to persuade non-libertarians, because it renders them tone deaf. “I have a right to put cocaine in my body if I want to” is a killer argument if you accept the Axiom, but for the other 99 percent of the world it’s just a bare assertion. Of course, even most Rothbardians recognize this weakness and have learned to make consequential arguments (“Banning cocaine causes violence and corruption without actually reducing cocaine use very much”) but it’s hard for them to really distinguish a persuasive argument from an unpersuasive one when the rights-based argument is the one they really find persuasive.
I think the receding prominence of Rand and Rothbard is a sign of the growing maturity of the movement. There are now plenty of people who call themselves libertarians who were actually persuaded by empirical arguments. (I have to confess that I’m not in that category–I was a borderline randroid in high school) And those people are frankly a lot better at convincing normal people of the merits of libertarian policies, because they’re much more sensitive to how non-libertarians view the world, and are able to craft arguments that “normal” people find compelling.
Moreover, when you get into the nuts and bolts of public policy, you discover that a chainsaw can be an awfully blunt instrument. The world really is a complicated place, and while the non-aggression axiom usually points in the right direction, it’s rarely sufficient to give you any guidance of the details of good libertarian policies. There really are market failures, collective action problems, free riders, and holdouts. Government action really is needed to deal with those problems sometimes. And even if those problems could always be solved without government intervention, you’ve got the problem that we have a very non-libertarian government right now. Electing a libertarian Congress that will abolish a dozen federal departments isn’t a feasible political program. So if you want to advance liberty in the real world, you have to be able to come up with incremental improvements to the status quo. The non-aggression principle doesn’t provide any guidance on how to do that.
Fortunately, other libertarian thinkers, such as Hayek and Friedman, have offered flexible and comprehensive political philosophies that are better equipped to deal with the complexity of the real world. I think the ascendancy of Friedman and Hayek is a sign that the libertarian movement has begun engaging people in the real world and offering practical solutions to the problems facing the country. The Mises Institute, unfortunately, seems stuck in the 1970s.