How to read the taxonomy as a whole

The arc from router to document workflows is an arc of increasing autonomy and structure. The router decides where to look. The multi-agent and hierarchical systems add parallelism and oversight. The corrective and adaptive systems add self-evaluation and effort-matching. The graph-based systems add relational reasoning. The document workflows add stateful, end-to-end process automation. Each step buys more capability at the price of more coordination complexity, latency, and cost, which is precisely the tradeoff the next chapter tells you how to navigate.