If artists merely wants to perfect their technique, the model-as-object might suffice, but if artists want to create art, they have to accept models as cocreators. Increasing specialization has led many artists to dedicate their entire life to very narrow lines of art. Crossing the line to picture beyond the constraints of everyday life.

S. R. Philips, in "Modeling life", State University of New York press

Artists by nature are often solitary creatures.