Complexity Theory and Language Development

This chapter takes a system view on second language (L2) development. However, unlike proponents of Complex Dynamic Systems Theory (CDST) viewing the developmental system as ever dynamic without a finite state, we take up a long-standing observation about a signature L2 phenomenon, inter-learner differential attainment, and theorize about its ontology. Drawing on a fundamental physics law, the Law of Conservation of Energy – importantly, not only conceptually but also mathematically –