Inverse marking as morphological movement - The case of Potawatomi

In this paper I show that analysing Potawatomi inverse marking in Harmonic Serialism (Müller 2020), a derivational version of Optimality Theory, as a reflex of morphological movement obliterates the need for assuming two Voice heads in the syntax, nominative-accusative and absolutive-ergative alignment at the same time, or one exponent encoding both arguments. In addition to inverse marking, morphological movement and movement-related repair operations can derive exponent drop, i.e. the unexpected absence of certain exponents whenever they realise the less salient argument.