CU Boulder discovered that chronic pain operates through a binary neural switch, not a gradual slide. The same mechanism that produces adaptation or pathology appears in financial crises, opioid treatment, and organizational decay. Researchers at the University of Colorado Boulder discovered in April 2026 that the caudal granular insular cortex (CGIC) contains a neural pathway that functions as a binary switch for chronic pain. When this pathway is active, acute pain signals crossing through it become permanent. When the pathway is silenced, chronification stops. Existing chronic pain reverses. The finding, published in The Journal of Neuroscience, reframes chronic pain as a gating problem rather than a damage problem. The evolutionary logic is severe. Research on injured squid shows that this hypervigilance mechanism dates back roughly 500 million years. Squid with active pain sensitization after injury survive predator encounters at roughly 45 percent.…