  Bohmian mechanics grounds the predictions of quantum mechanics in precise
dynamical laws for a primitive ontology of point particles. In an appraisal of
the de-Broglie-Bohm theory, the paper discusses the crucial epistemological and
conceptual role that a primitive ontology plays within a physical theory. It
argues that quantum theories without primitive ontology fail to make contact
with observable reality in a clear and consistent manner. Finally, it discusses
Einstein's epistemological model and why it supports the primitive ontology
approach.
