In a market economy with the division and specialization of labor, people use others as means to achieve their ends. This is the essence of market cooperation.

We must recognize that only scarce resources are ownable; second, that the body is a type of scarce resource; third, that the mode of acquiring title to external objects is different from the basis of ownership of one's own body.

My basic approach is to recognize that mainstream legal theories of contract have been muddied by unlibertarian and positivistic conceptions of law and rights. Questions about what rights are "alienable" or not, loose talk about how promises should be "binding," etc., highlight the need for clarity in this area. In my view, to sort these issues out one needs a very clear and consistent understanding of the nature of property rights and ownership.

Artists are just entrepreneurs. It's up to them to figure out how or if they can make a monetary profit from their passion − from their calling, as I discussed above. Sometimes they can. Musicians can sell music, even in the face of piracy. Or they can sell their services − concerts, etc. Painters and other artists can profit in similar ways. A novelist could use kickstarter for a sequel or get paid to consult on a movie version.

Because the state necessarily commits aggression, the consistent libertarian, in opposing aggression, is also an anarchist.

The Austrian theory of subjective value teaches us that there are many ways to incentivize or motivate or induce someone to commit an action for you: you can promise sexual favors, promise to pay money, hire someone, and so on. Also, there is no reason to think that both the boss and his underling cannot both be 100% responsible: in the law this is called joint and several liability.

The roots of copyright lie in censorship. It was easy for state and church to control thought by controlling the scribes, but then the printing press came along and the authorities worried that they couldn't control official thought as easily.