My, such hostility. No need to get so defensive. My post was no more than a contribution to the stream of this discussion.
And no, obviously, your X is nonsensical. I was talking specifically about a Libertarian society, not all societies. It’s ridiculous that I should have to clarify that. Are all the nouns in your sentences interchangeable with other random nouns?
FWIW, I agree with xenophon that Libertarianism is an “effective and vital opposition philosophy”; that it has a place in the eternal political discourse as a supplier of a valuable perspective.
But the internal contradictions I referred to above are irrefutable: In order to work, a Libertarian society would have to consist entirely of committed Libertarians. The system would rely entirely on the “honor system.” To maintain this system in the inescapable context of human nature would require either enforcing the honor system, which is of course oxymoronic, or expelling non-adherents, which is of course coercive.
Even Ayn Rand’s hidden utopia had to be hidden, and depended upon total isolation and the philosophical commitment and acquiescence of every individual member; even she couldn’t posit a real-world Libertarian society.