The traditional fine arts are elitist: their characteristic form is a single work, produced by an individual; they imply a hierarchy of subject matter in which some subjects are considered important, profound, noble, and others unimportant, trivial, base. The media are democratic: they weaken the role of the specialized producer or auteur (by using procedures based on chance, or mechanical techniques which anyone can learn; and by being corporate or collaborative efforts); they regard the whole world as material. The traditional fine arts rely on the distinction between authentic and fake, between original and copy, between good taste and bad taste; the media blur, if they do not abolish outright, these distinctions. The fine arts assume that certain experiences or subjects have a meaning. The media are essentially contentless (this is the truth behind Marshall McLuhan’s celebrated remark about the message being the medium itself); their characteristic tone is ironic, or dead-pan, or parodistic. It is inevitable that more and more art will be designed to end as photographs. A modernist would have to rewrite Pater’s dictum that all art aspires to the condition of music. Now all art aspires to the condition of photography.
— Susan Sontag, On Photography, 1977