Fox joined the System Dynamics Group at MIT, collaborating on the DYNAMO language.
On September 1, 1958, Phyllis Fox joined the System Dynamics Group at MIT, led by Jay Forrester. Here, she became instrumental in the development of the DYNAMO system dynamics programming language. By contributing to this innovative technological effort, Fox played a critical role in advancing new methods for modeling complex systems, influencing future studies in system dynamics and computer simulations.