after the assignment of contractual rights, the assignee will receive all benefits that had accrued to the assignor. for example, if a contracts to sell his car for $100 to b, a may assign the benefits (the right to be paid $100) to c. in this case, party c is "not" a "third party beneficiary", because the contract was not made for c's benefit. assignment takes place after the contract was formed; they may not precede them.