We introduce YMERA, a multi-agent simulation framework in which 21 AI executive agents deliberate over strategic, operational, financial, and risk decisions using a historical economic data surface spanning 1925-2024. In the current benchmarked experiments, we evaluate the 1925-1934 decade and compare three memory conditions: bio-inspired memory, flat retrieval memory, and no memory. In the canonical three-condition run (n=78 per arm), bio-memory and flat retrieval each substantially outperform no memory (d=5.30 and d=4.94, pflat signal for CEO+CHRO agents in crisis years after agent-year normalization (d=1.03, Welch p=0.022). We conclude that memory presence strongly improves organizational AI decision quality, while bio-inspired mechanism complexity yields no broad advantage over flat retrieval at this model scale.
Mohamed Fathy Mansour (2026) studied this question.