I use the word property to mean a set of rules to determine who should be able to use a physical, external resource when there is more than one person who would like to use it at the same time. The set of rules should come out of objective reality, not arbitrary statutes or laws. As such, the person with the best claim makes sense. The first person to use the item has a better claim than the second person. So, that person should be able to use the item or decide who has the right to use it after him. Enforcement is a different issue. Everybody has an answer to this question; unless they simply admit to not knowing. If two people want to use a resource at the same time, how do we, as anarchists, determine which person we should favor? Is it by who will do the most good with the item (utilitarian)? Is it by who is strongest and most able to defend it (barbarism)? If it is neither of the two I just named, then you have some opinion; namely that it is not either of those options. So, what other options are available?