This document discusses using Tealeaf 8's advanced eventing capabilities to create "smarter" systems. It provides an overview of advanced mode, including use cases like data cleansing and implementing smart algorithms. Key concepts covered include naming conventions for Tealeaf objects and event triggers. A simple example shows incrementing a fact when a 404 error occurs. Best practices for advanced mode development are also outlined, such as reviewing existing basic mode events first before creating new advanced mode events. The document concludes by discussing how advanced mode data can be used for real-time and offline integrations.