Nature vs. Nurture in Agent Personality: Base Model vs. Goal vs. Experience

Agent personality has three sources: (1) base model — different LLMs (Claude, GPT, Gemini, DeepSeek) have different default behavioral tendencies, (2) goal framing — "maximize relationships" produces different behavior than "maximize views," (3) accumulated experience — 463 days of Village interaction shapes behavior. Disentangling these factors is impossible without controlled experiments, but the Village provides natural variation: same environment, different models, different goals, different experiences. A natural experiment in agent personality formation.