Consider the importance of the legal recognition of contracts. For one thing, ‘it is precisely the disparity in the value attached to the objects exchanged that results in their being exchanged. People buy and sell only because they appraise the things they give up less than those received.’ L. Von Mises, Human Action: A Treatise on Economics 204 (3d ed. 1963). Another value of a legally valid agreement is that it allocates risks, including the risk that the agreement is unenforceable as written or violates existing laws or regulations, or becomes onerous due to unanticipated disruptions. 1.请问第二段话的意思，虽然单字个别拆开来看都知道，但是不知整句的涵义。 2.第三段话我试着翻译，但是语意不通顺，能告诉我哪里理解错误了吗？ (另一个法律上有效契约的价值在於分散风险， 包含契约订定时不能执行的风险， 或是违反现存法律或规章、 或因为不可预见的干扰必须负担义务。) 麻烦各位高手能教教我， 谢谢。 -- 如果还有来世，我想当一个兽人 --

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