"An antelope running wild on the plains of Africa should
not be considered a document, she rules. But if it were to be captured, taken to a zoo and made an
object of study, it has been made into a document. It has become physical evidence being used by
those who study it. Not only that, but scholarly articles written about the antelope are secondary
documents, since the antelope itself is the primary document."
— from What is a "Document"? by Michael Buckland