A framework for understanding science as fundamentally context-dependent—what counts as good science, which methods are appropriate, and what standards apply all shift with context. Contextualist Science recognizes that science isn't context-free; it's always science-in-a-situation, science-for-a-purpose. Methods that work in physics may not work in ecology; standards that fit lab experiments may not fit field studies. Contextualist Science studies these shifts—how context shapes scientific practice, and what that means for scientific knowledge. It's science studies that takes seriously the diversity of scientific contexts.