Martin is a lawyer who has closed many residential real estate transactions. Back when he was starting out, Martin read the relevant statutes and regulations and prepared all the documents himself. For each transaction, Martin drafted a Statement of Adjustments, adding numbers in his head. Eventually he used a calculator, and then a software program. Then, he hired a law clerk and taught her how to do it. Should the situation arise where Martin needs to prepare a Statement of Adjustments manually, he can easily do so, because he knows everything that there is to know about them. When a dispute arises as to the accuracy of a Statement of Adjustments, he can resolve it.