RAG (retrieval-augmented generation) is how most AI tools search your company's documents to answer questions. Instead of guessing, the model pulls relevant text from your files and uses it to respond Sounds reliable. Usually isn't. Last month, our team shipped a RAG-powered search feature to a Fortune 500 client. Three days later, this Slack message showed up : "The AI pulled a revenue number from our Q3 report. But when I checked the PDF, that number was from a footnote about projec...