The Gate Before the Graph: Why Technical RAG Needs Evidence Control
Search is easy until it becomes responsible. A product engineer asks, “What methods exist for real-time tire friction estimation?” A normal search tool returns papers. A normal RAG system retrieves chunks. A confident LLM then writes a neat answer, preferably with enough bullet points to look managerial. The problem is not that this answer is always wrong. That would be mercifully simple. The problem is that it may be locally plausible but evidentially thin: two relevant chunks, one outdated method, no coverage of adjacent terminology, and a citation that looks reassuring mostly because it exists. ...