Researchers in history and the historical sciences explore the use of generative AI (GenAI) systems for reconstructing destroyed artifacts. This paper poses a novel question: can such GenAI systems generate evidence that provides new knowledge about the world or can they only produce hypotheses that we might seek evidence for? Exploring responses to this question, the paper argues that 1) GenAI outputs can at least be understood as higher-order evidence (Parker 2022) and 2) may also produce de novo synthetic evidence.