"Escape Velocity: Better Metrics for Agile Teams" by Doc Norton focuses on improving agile team performance through insightful metrics beyond simple velocity. The book critiques common agile metrics like velocity, highlighting their limitations and potential for misuse, and advocates for a more holistic approach to measuring team effectiveness. Norton explores the impact of metrics on team behavior, discussing potential side effects like the Hawthorne Effect and Goodhart's Law. It emphasizes the importance of understanding correlations between different metrics and adapting measurement strategies to align with desired outcomes. The book champions customer-centric metrics, advocating for a focus on value delivery rather than just feature output. Ultimately, "Escape Velocity" guides agile teams in selecting and utilizing metrics that promote continuous improvement, code quality, and team satisfaction, and the foreword provides acknowledgment of those who supported the author in the creation of the book.