The reason is that the vast knowledge is not useful for people if you cannot sum up in lesser time. I remember that Albert Einstein said that the concept is the thing which you deliver in very simple words that helps people in understanding what actually the person is talking about. So you must be capable to deliver in the time that you are allotted.
The Articles of Confederation served as the written document that established the functions of the national government of the United States after it declared independence from Great Britain.
