  Causality in electrodynamics is a subject of some confusion, especially
regarding the application of Faraday's law and the Ampere-Maxwell law. This has
led to the suggestion that we should not teach students that electric and
magnetic fields can cause each other, but rather focus on charges and currents
as the causal agents. In this paper I argue that fields have equal status as
casual agents, and that we should teach this. Following a discussion of
causality in classical physics I will use a numerical solution of Maxwell's
equations to inform a field based causal explanation in electrodynamics.
