In 2020, an AI model flagged existing drugs as COVID-19 treatments, and the media called them discoveries. When tested in controlled assays, almost all failed. The AI had found statistical patterns in messy data, including assay artifacts, not actual mechanisms. That exposes the core problem. A discovery tool earns legitimacy when its outputs can be trusted as new knowledge about nature. AI outputs are just hypotheses, often confidently wrong. They only become discoveries after traditional experiments, controls, and replication confirm them. So AI is a pattern-finding aid, useful but not itself a discovery tool. Calling it one conflates correlation with insight and prediction with confirmation.