A document is not necessarily a simulation of paper. In the most general sense, a document is a package of ideas created by human minds and addressed to human minds, intended for the furtherance of those ideas and those minds. Human ideas manifest as text, connections, diagrams and more: thus how to store them and present them is a crucial issue for civilization.—Ted Nelson
"Our goal should be nothing less than REPRESENTING THE TRUE CONTENT AND STRUCTURE OF HUMAN THOUGHT. But it should be thought of as something more: enabling the mind to weigh, pursue, synthesize and evaluate ideas for a better tomorrow. Or any at all."