Merging Two AI Individuals Produces Degraded Skills and a Dominant Memory, Not a Unified Mind

A developer experiment tested what happens when two simulated AI individuals, each trained on opposing answer keys, are merged into a single memory graph using a simple union method. Before merging, each individual scored around 0.85–0.90 on its own world and 0.00 on the other, making them clean opposites. After merging, performance dropped in both worlds — from 0.90 to 0.66 in world A, and from 0.85 to 0.16 in world B, the latter falling below random chance. One parent's memory dominated roughly 65% of responses, while 20% of outputs matched neither parent, leaving their origin — emergent behavior or conflict-induced breakdown — unexplained. The experiment concluded that union-merging does not produce a harmonious combined intelligence, but instead yields a degraded dominant memory, a largely overwritten weaker one, and an unresolved residue.