Overview As System Dynamics moves into its seventh decade, improved understanding of the world around us has never been more important. This need resonates across disciplines and from K-12 to academia to business and government. It calls for us to consider impacts of accumulation, feedback, and time delays while systematically evaluating policies for sustainable business practices, resource use, education, health care, and prosperity. We invite seasoned practitioners to share their important contributions to the field. We also invite those new to…