Projects like these, which are upfront about their methods and clear about where the known work ends and the human or computer's interpretation begins, offer the opportunity for us to explore how a lost masterpiece might once have looked. These efforts are part of a long tradition of historical reconstructions, but in recent years they have been created and often experienced digitally, avoiding any need to alter the surviving work. The best attempts are openly inconclusive, acting primarily as a starting point for our own imaginations to fill in the blanks.