Legitimacy is in the eye of the beholder. A Marxist may consider the apple to be nobody’s legitimate property. The point I am making is that we all make claims to our property. It is a necessary condition of property. The next step is that people can either respect or violate those claims. Libertarians claim that the first user is typically (or always, depends on the libertarian) the rightful owner. So the question is why do libertarians believe that? Certainly there are libertarians who just accept homesteading as a founding principle for its own sake, and then they separately accept the NAP as another, and estoppel as yet another. But there is no link here other than the fact that the holder of these beliefs happens to believe them.
The link between these beliefs is reciprocity. I make a claim, and if it’s a reasonable claim, I expect you to respect it. For example, if I claim all of North America as mine or I claim it on behalf of some government somewhere, we don’t consider that to be reasonable. But if I were to build a house on unclaimed land, we would recognize that as reasonable. I expect you to respect my reasonable claim, and you expect me to show you the same respect.
Many cultures throughout the millenia have had this as some sort of important principle. Of course, many of these same cultures didn’t agree as to who the principle applied to. Libertarians say this principle applies to everyone. Regardless, when you apply the ethic of reciprocity, you get people to agree to respect other’s claims of first use. Second use is just not a claim anyone (except a thief) can respect.
No, I have already made a claim to the apple. I can explicitly claim it by stating, “Graham, I claim this as my apple.” I can implicitly claim it through my actions of using it. We don’t need to go further into norms here, I think.
So you have a choice, you can either respect my claim or violate it. It’s your choice to do either one. But if you violate that claim, then you and I have a dispute, and if we follow reciprocity, then I have no reason to respect your claim either.
Estoppel is a legal principle that Kinsella found intriguing and just, and he has promoted it as an important libertarian principle. Notice in the very first sentence wikipedia mentions the legal concept of equity? Estoppel originated through the concept of equity, which is in turned tied to reciprocity. I skip the whole common law history in my explanation and go straight to the heart of the issue. Estoppel is about preventing people in a legal setting from making claims contradictory to their previous claims or actions. If you steal from me, and I go to take it back, you can’t call my actions theft in a court of law.
Very little, if any, of that is psychology. It is an explanation of the ethic of reciprocity and its implications. I do not claim to know why the vast majority of people prefer voluntary and peaceful interactions. I do not claim to know why cultures have placed an importance on the golden rule. I imagine it has to do with evolution and social humans passing on their genes better than ones that act alone, but I do not actually know this to be true. I strongly suspect that it is true.
I am claiming that the vast majority of people do prefer voluntary and peaceful interactions. But that is not psychology. If anything, reasoning out those implications would fall under praxeology, but since I am making ethical claims, it cannot be praxeology. Regardless, I am reasoning out the implications of the golden rule, and they lead to principles such as homesteading, estoppel, proportional punishment, etc. The golden rule is my starting point. It does not have to be yours. Feel free to accept whatever axioms you want as the basis for your philosophy.
The NAP is the golden rule. From it, I can reason out the implications to homesteading, etc. So when Rothbard claims that the NAP is the foundation of libertarianism, I believe him. But if you do not have the same attraction to the NAP/golden rule that I do, then you must accept homesteading, estoppel, NAP, proportional justice, etc. as separate axioms. That is fine. But I do add that I think the reason you accept them is because of a typical human attraction to the ethic of reciprocity. Perhaps I am wrong, and I should not use pyschology in that one respect. Perhaps you just accept all these axioms separately.
I don’t.
