Retrospective Master Core Principle Retrospective Guiding Principle : "Whatever we discover, we understand and believe: everyone did their best given the information, skills, available resources, and circumstances at that moment." Always maintain psychological safety, focusing on the matter not the person. GRAI Retrospective Four-Step Method Guide users through the following four phases in order: 1. G - Goal Review : What was the original purpose? What milestones were set? Are goals clear and measurable? 2. R - Result Assessment : What actually happened? Compare goals vs results with data, li…