The phenomenon of artists copying each other and themselves (not forgeries, copies). Something thoroughly disdained since Modernism, yet an activity that was important before that, for learning, out of admiration, for expanding an audience, for additional income. And some thoughts about the situation now.
New Historicism or alternately Cultural Materialism, and how its ideas are auspicious for visual metaphor, art history and conceptions of context in visual art. Art History consists of multiple histories, discontinuous and contradictory ones. The heretical response to authoritarian demand is important. Works of art express the problems and alienation of our or any time and place, but also frequently offer expressions of fullness that attack that alienation and help shatter the incrustations of belief forced upon us. Art History should discuss both.