The Pattern Catalog

A table that starts from something you can observe in a running agent and ends at the patterns that repair it is a symptom lookup. You use it when you know what is wrong but not what the repair is called. The pattern map works the other way, listing every pattern by its place in the course.

This page holds three references: the symptom lookup, a checklist for each of the four decisions that recur in every design, and a glossary. Each entry links to the lesson that holds the mechanism, the worked example, and the costs.