Write a one-sentence hypothesis linking a proposed change to a specific KPI movement and a timeframe. Limit scope to one shift or one store. Define stop conditions upfront so you can abandon politely and learn quickly without politics or sunk-cost drama.
During the test, capture daily snapshots and compare against baseline with a simple run chart. Mark the intervention start with a clear line. Encourage the team to annotate anomalies, linking events to data, building shared understanding instead of whispered guesses or blame.