Why this module matters

You now know how LLMs work and how to build a system around them. But there is one problem that almost every AI product eventually runs into, and it has nothing to do with prompts or pipelines.

The model does not know what it does not know. It cannot tell you about last week's policy update, your internal product documentation, or the customer conversation that happened this morning. Its knowledge ended the day training ended.

This module is about how to solve that problem, and why getting the solution right is one of the most consequential architectural decisions in any AI product.