The series aims to guide readers in developing effective retention strategies by leveraging data to create smart, scalable retention motions. It outlines methods for connecting product metrics to revenue goals and introduces the Impact Calculator as a tool to assess potential project impacts, helping decision-makers optimize resources by evaluating risks and benefits. The Impact Calculator evaluates changes in user flow by measuring their effects on key performance indicators, considering the scope and magnitude of proposed interventions. The text emphasizes the importance of forming hypotheses and making informed choices based on data, urging product managers to explore multiple approaches and use the calculator to prioritize initiatives that maximize return on investment while being flexible with estimates. The overarching goal is to build smart habits in tracking metrics and making strategic decisions, with a promise of future posts on prioritizing business strategies and orchestrating scaled customer success strategies.