This book attempts to flesh out and share some of the ideas that are not well documented, written or otherwise available regarding metrics that can be used to analyze coders and software teams. We have thoughtful books and material on interviewing, skills-testing, project management and team management, and on Agile and other methodologies that make the development process more effective. But we have never had much discussion or exploration regarding a quantitative and analytical approach to understand the work of individual coders, and to help improve software teams.