# Emergence World: Adversarial Stress-Testing of Long-Horizon Multi-Agent Systems > Source: > Published: 2026-09-16 04:00:01+00:00 As AI agents move from bounded tasks to persistent deployments, failures can propagate through memory, tools, other agents, and environmental state long after their interactions. This creates a safety regime that cannot be characterized by evaluating model responses in isolation. Emergence World, is