All of these metrics are like trying to measure progress on a building project based on the volume of noise produced. ‘I don’t hear hammering! There should be

All of these metrics are like trying to measure progress on a building project based on the volume of noise produced. ‘I don’t hear hammering! There should be more hammering!’ ‘Lines of code’ is a useful metric for ‘likely ongoing maintenance cost’. ‘Impact’ is a good proxy measurement for ‘likelihood the change introduced a bug’. If you encourage teams to increase those numbers you will get what you deserve.