The Department of Defense, through the Defense Advanced Research Projects Agency (DARPA), is soliciting innovative research proposals under the Advanced Research Concepts (ARC) Opportunity titled "Methodological Advancements for Generalizable Insights into Complex Systems (MAGICS)." This initiative aims to develop new methodologies for modeling collective human behavior in complex, dynamic systems, addressing the limitations of current statistical approaches that struggle to accurately predict behaviors in evolving, open, time-varying environments. The opportunity is critical for enhancing predictive modeling capabilities relevant to national security and societal dynamics, with selected proposals potentially receiving funding between $100,000 and $300,000 for a performance period of up to 12 months. Interested parties should submit their proposals by July 10, 2025, and can direct inquiries to the BAA Coordinator at MAGICS@darpa.mil.