Measuring Developer Productivity

This analysis by Kent Beck is worth sharing. 

Measuring productivity is a complex and nuanced problem, and there is no single solution that will work for everyone. The best approach to measuring productivity depends on the specific needs of the organization, such as the goals of the measurement, the resources available, and the culture of the organization. Any attempt to measure productivity must be done carefully, as it can have unintended consequences, such as creating a culture of fear or mistrust. It is important to remember that productivity is not the only measure of success, and that other factors, such as quality and customer satisfaction, are important.