Imagine, one works hard, saves enough money and buys some land, then, surely his ownership of the land should be respected. But what about 1000 years afterward, should his descendants be granted the right to keep other humans away from utilising this piece of land for generations and generations since someone "bought" it monetarily 1000years ago?
Obviously not. The land is a natural resource. It is part of nature.
更長遠說,世界層面上看,國家的國土拥有權也是如此。衹是因為人類的"文明"制度使這個土地拥有權不能自然消散而要通過殘酷的鬥爭。而資源緊繃又使這個悖论更突出。