Prominent philosophical accounts of artistic forgery have neglected a central aspect of the aesthetic harm it perpetrates. To be properly understood, forgery must be seen in the context of our ongoing attempts to augment our aesthetic understanding in conditions of uncertainty. The bootstrapping necessary under these conditions requires a highly refined comprehension of historical context. By creating artificial associations among aesthetically relevant qualities and misrepresenting historical relationships, undetected forgeries stunt or distort aesthetic understanding. The effect of this may be quite (...) pervasive, and removing known forgeries from museum walls will be insufficient to eradicate it. Continued attention to forgeries, once exposed, can in fact serve us by increasing our understanding of how aesthetic understanding is formed and by helping us to repair the damage they have inflicted. (shrink)