Martin Summers, a seasoned fraud examiner, has been hired by Bright Glass USA, Inc. to investigate a suspicious shortage of cash. Summers could spend his time and money interviewing witnesses to the crime or collecting documents that would confirm the fraud. As with most fraud examiners, he chooses to collect supporting documents instead of interviewing witnesses. Explain why Summers and most other fraud examiners prefer documents over witnesses, and then describe elements of good document care.