Submitted by No-Eggplant-5396 t3_11b4m8l in explainlikeimfive
After googling for a bit, I came to the conclusion that ownership was a socially accepted relationship between a legal person and property. The relationship allows legal persons to exchange properties or use property without retaliation. But this doesn't make sense for co-ownership. If a co-owner exchanges property or uses property without the consent of the other co-owners, then the co-owner may experience retaliation. So I am not sure what ownership means exactly.
ukAdamR t1_j9w2j1v wrote
The key point about ownership is enforcement of such arbitrary relationship between one legal entity and property or another legal entity.
Legal entity instead of "person" matters because ownership is largely not just between a person (or people) and property. For example a company is often recognised a legal body in its own right also capable of ownership of property, and a sovereign state is also able to own property.
I could claim ownership of, let's say your phone. However I could not enforce this ownership because there is a greater power arbitrating that you own your phone. That power being the ratified law of your land acknowledging the process in which you legally purchased your phone. If I stole your phone though, and no law enforcement was able to recover it, then your ownership bond is broken as I could now enforce my own ownership. On the flip side such an arbitrating power can equally enforce against your ownership of your phone, for example if it should decide your phone is to be seized as evidence in crime. So you only own your phone if appropriate enforcement continuously upholds your ownership of it.
We could think way beyond. Can we claim ownership of the planet Saturn? Of course, but neither of us, or realistically any arbitrating power, have any chance of enforcing that claim making it worthless.