In this conclusion to his series on Effective Aggregate Design, Vaughn discusses the discovery process: how to recognize when a design problem is a hint of a new insight, and how different aggregate models are tried and then superseded.

This presentation by Vaughn Vernon was recorded on February 13, 2012, at the DDD Denver (formerly Denver-Boulder Domain-Driven Design) Meetup Group. The material is based on the essay found elsewhere on the DDD Community site.