ABSTRACT
The study of neutrino interaction physics played an important role in establishing the validity of the theory of weak interactions and electroweak unification. Today, however, the study of interactions of neutrinos takes a secondary role to studies of the properties of neutrinos, such as masses and mixings. This brief introduction describes the historical role that the understanding of neutrino interactions has played in neutrino physics and what we need to understand about neutrino interactions to proceed in future experiments aimed at learning more about neutrinos.
