Abstract
Keith Lehrer (2019) identified the significant role played by exemplarization—a distinctive kind of representation of experience—in justification and defense of knowledge claims, including in the process of scientific change. He also highlighted the freedom of choice involved in the use of exemplarization in scientific contexts (Lehrer 2024). In this paper, I build on these insights and consider the roles of exemplarization in two notable tools of scientific research: electron and probe microscopy. I then examine the form of scientific self that needs to be in place for exemplarization to play these roles and the corresponding objectivity that results (Daston and Galison 2010). An interesting kind of empiricism emerges.