But you don't, really. Rights, boiled down to it, are an agreement. "Property rights," as commonly understood, are simply the agreement: "I don't steal your stuff, you don't steal mine." The thief, having rejected that agreement, has opened himself to retaliation in kind: "You steal my stuff, I'll steal yours." Now, to avoid the chaos of all against all that is commonly called "anarchy," some structure is needed to make things more civilized. This structure need not be a government, and in fact, it's best if it's not. A government, by it's very nature, distorts the agreement: "You don't steal his stuff, and he won't steal yours, but, I can steal from both of you." Not cool. Instead, what AnCap suggests is a system of agencies which provide that same structure, but do so without distorting the agreement: "You don't steal his stuff, and he won't steal yours, but if something does happen, you've both agreed to let me decide how it should be settled."