NexusSIM Selected as Simulation Lab for University of Utah Dental Caries Project

At Just Horizons, our work is driven by the conviction that today’s most persistent social challenges require the most innovative tools, grounded in human values and centered on the people they are meant to serve. We are proud to announce the official launch of a groundbreaking new initiative that places this principle into direct action. […]
Seth Villegas
Rachel Bacon
Abigail Wester
Gabe Maayan

Gabe McDonnell-Maayan is a researcher and engineer at Just Horizons Alliance and a PhD candidate with Boston University’s Faculty of Computing and Data Sciences. His work sits at the intersection of computational methods and human systems—applying social simulation, statistical analysis, and machine learning to complex policy challenges across a wide variety of domains, including suicide […]
John Balch

John Balch, Ph.D. is a Senior Researcher and Senior Engineer at Just Horizons Alliance, where he designs multi-agentic, graph-based LLM systems that transform complex unstructured data into actionable parameters for simulations and policy reports. Operating as a versatile resource across domains, John bridges advanced data science with a deep grounding in psychological and cultural theory. […]