You can go back all the way to the stone age: technological evolution -- roads, the wheel, writing, a lot of transportation and communication technologies -- has just inexorably made it so that more people can be in more non-zero-sum relationships with more and more people at greater and greater distances.
你可以一直回到石器时代， 而且，我想，从技术革命，公路，轮胎，写字， 很多交通和交流技术 正是无情的使更多的人 能够和 更多的人在更远的距离中拥有跟多的非零和的关系。