Describes a shift in artificial intelligence from traditional vector-based retrieval to a new "vectorless" framework called PageIndex.

While standard systems rely on mathematical similarity and fragmented data "chunks," this new approach utilizes hierarchical document trees to preserve the original structure and context of complex files.

By replacing simple searches with agentic reasoning, the system can navigate dense professional documents with significantly higher accuracy, specifically excelling in the finance and legal sectors.

Although this method faces challenges regarding computational speed and scalability for massive datasets, it offers a more transparent and auditable alternative for high-stakes applications.

Ultimately, the sources suggest a future where HybridRAG systems combine the broad discovery of vector databases with the deep, structural intelligence of reasoning-based libraries.