There is no perfect social system

Just as there may never be any isolated closure and teleological endpoint to logic, physics and mathematics - there can also never be any such thing as the "one true way" or ideological and social perfection. There are only successive approximations and iterative algorithmic refinements towards a better world, without end.

Can anyone own the moon ?

If personal subjectivity is a reflection of an internalised concept of ownership and property, what happens if it turns out that neither individual identity nor notions of ownership are, beyond a very limited and historically or culturally contingent sense, actually real ?