It reduced people to be in trade the uncertainty in the process, reduced people to be in trade the activity trades mediumly cost and hire a value abreaction.

• 毫无疑问,合约安排在经济生活中起着重要的作用。它减少了人们在交易过程中的不确定性,降低了人们在交易活动中的交易成本及租值消散。可以说,有无有效率的交易合约安排是社会经济成长或停滞、衰落的关键。