Do not offend paleolithic people! They most liekly knew the idea of property -and applied it to the things they valued. Bronisław Malinowski, a Polish anthropologist who dealt with the inhabitants of Trobriand Island, realized that they owned means of production (boats) privately. If an Islander wanted others to help him build a boat he invited them to feast at his coast (he provided food for them) - then they helped him with a boat as a repayment. Honest enterpreneurship... Lennon and other commies wouldn't like it at all