06·Reflection — higher-order memory synthesis

Introduction

Reflection is a mechanism in which an agent "thinks about its memories" and generates new, higher-level entries: observations, insights, rules, and predictions. In Generative Agents, Park et al. (2023) trigger reflection periodically to produce new nodes in the memory stream that then participate in further retrieval. This lesson unpacks: how the trigger works, how reflection is generated, why reflections carry higher importance, and how agent knowledge is built hierarchically.