一只羊=两把石斧古人用一只羊来交换两把石斧,因为他们觉得两者价值相当,这种交换叫作物物交换,是货币出现之前人们的交易方式。但这种简单的物物交换也是到了尧舜禹时期才有的,因为再往前的猿人时代,生活只能自给自足,根本没有剩余物品来进行交换。贝壳当作货币随着社会的发展,剩余物品开始增多,交换也在扩大。有粮食的人换不到自己想要的弓,怎么办?聪明的古人想了一个办法:找到一种大家都认可的中间物品,先把自己的剩余物品换成中间物品,然后再拿 One Sheep = Two Stone Axes The ancients used a sheep to exchange two stone axes because they perceived the value of the two as equal. The exchange was called barter, the exchange of people before the currency appeared. However, this simple exchange of things was also achieved during the Yao, Shun, and Yu periods. For the Ape-man era forward, life can only be self-sufficient and there is no surplus for exchange. Shell as a currency With the development of society, the surplus began to increase, the exchange is also expanding. The people who have food can not change their bow, what should they do? The wise ancient people thought of a way: to find a middleware that we all recognize, first put our own surplus item into the middle item, then