“Medical expertise, not being a natural resource, does not fall under Nozick’s “Lockean proviso”. The following trialogue is then a realistic scenario within Nozick’s libertarian society. A police officer comes upon a couple struggling with each other, the man evidently trying to rape the woman.
Woman: Please, sir, please help me.
Officer (to man): Hey, you, let her go at once!
Man: Don’t get involved.
Officer: I must. You are violating this woman’s right not to be assaulted.
Man: No, I’m not. She is my slave. Here are the papers, signed by herself.
Woman: But I was coerced into signing. He said he would not treat my father if I refused to sign.
Officer: That’s not coercion but at most duress. He was at liberty not to treat your father or to ask compensation for treating him.
Woman: But my father is dead!
Man: The contract says only that I would try to save him, and I did.
Officer (to woman): I’m sorry, ma’am, but I cannot help you.
Man: But you can help me in forcing her to fulfill her contractual obligations. She has already scratched me. See if you can tie her hands.
(Officer ties Woman’s hands, she screams for help as she is being raped…)
Man (to Officer): I’m glad the police are protecting citizen’s rights. Isn’t she great? My sons will have lots of fun with her when I bring her home.”
— Thomas Pogge, Realizing Rawls (1989)