Changing a contract is unethical, but that's not the technique described here. The strategy is with clarifying the contract. For example, if you agree on a pric

Changing a contract is unethical, but that's not the technique described here. The strategy is with clarifying the contract. For example, if you agree on a price, that price should be set in stone, but that's only part of the contract. What about payment terms? That's when you write a contract that says payment is due upon receipt, and not net 30 or longer.