According to God of Prompt on X, prompt engineering cannot fix a broken retrieval layer because vector similarity often returns the closest match, not the most relevant context, leading agents to act on wrong information. As reported by God of Prompt citing HydraDB, HydraDB is building context infrastructure that models relationships, tracks evolving user state, and retrieves information by relevance rather than proximity. According to the referenced thread by Nishkarsh (@contextkingceo), the industry benchmark for this problem is 90%+ accuracy on LongMemEvals, which evaluates long-horizon memory and retrieval. For AI teams shipping agents, the business impact is clearer task success, reduced hallucinations, and higher conversion in production workflows by upgrading retrieval from naive vector search to stateful, relationship-aware context systems.