With evidence
RAG
Retrieval before generation, visible citations, explicit uncertainty.
Simple explanation
Search the documents first, then write. Without excerpts it is only style.
Technical explanation
Ingest → chunk → retrieve → narrow → generate. Show confidence and sources. Ask My Lab must follow the same contract.
Evidence
Knowledge Copilot (PDF/DOCX/MD, no OCR, no auth). No published retrieval benchmark numbers.