When a child in the U.S. is born, the hospital issues a government document to prove a child was born. This person later registers with the government to receive a document that proves they are a part of the social system. Later if the person chooses to travel, they get another document, to enable them to enter foreign countries.

The person grows up working hard in school to obtain a document, a diploma, which says they did complete their primary education in high school or via independent studies. Some folks push on to get yet other classifications of documents.

All of these documents enable you to access other documents ... Dollar Bills, W2s, Funds, Stocks, Deeds, etc.

O'Toole gets it. Documents are central to everyday life and business.