The document discusses the history and widespread use of the credit hour as a standard unit of measurement in higher education. It traces the development of standard time zones and clocks in the late 19th century, which facilitated the use of the credit hour. The credit hour is now used for many internal and external purposes, including degree requirements, faculty workload, financial aid, accreditation, and more. The document also describes Wisconsin's experiment with competency-based education as an alternative to the credit hour model.