Originally Posted by Penforhire
Non-ownership generally means free for the taking. As Iguana mentioned, you can take my carbon atoms over my cold dead body (excluding what I exhale or otherwise emit). Ownership means you can't use mine.
Well I guess we run into problems when we use general meanings then. Let's use a more specific meaning of the term non-ownership. This means that the object in question is owned by everyone. Therefore we all have equal rights to the object.
Extending from one object to all, we cannot take anything because it is already there.