 One taking Healey’s pragmatist approach might respond to this worry by noting that these conceptual changes are a straightforward consequence of the application of inferentialist pragmatism to quantum theory. For an inferentialist pragmatist, a material inference can contribute to the content of a claim only if it is reliable, but in the quantum domain physical inferences of a sort we all make in everyday life fail dramatically. The sensitivity of physical concepts to a system’s physical environment is arguably the natural result of reconfiguring our physical concepts to restore the reliability of inferences involving them.