Introduction to the ReThink Health Dynamics Model January 5, 2014 | The ReThink Health Dynamics Model (RTH) is a deterministic compartmental system dynamics (SD) simulation model for exploring alternative interventions to improve and transform health and health care at a local level. This white paper provides an overview of the model’s structure, assumptions, empirical foundations, as well as results from several illustrative intervention scenarios. Homer J, ReThink Health Dynamics. Introduction to the ReThink Health Dynamics Model: Simulating Local Health Reform in “Anytown USA”. 2013 August.