I love that @tastapod ripped McKinsey a new one on this lazy ill-informed piece they wrote about measuring developer productivity 
https://dannorth.net/mckinsey-review/
dannorth.net · McKinsey Developer Productivity ReviewMcKinsey recently published an article claiming they can measure developer productivity. This has provoked something of a backlash from some prominent software people, but I have not seen anyone engage with the content of the article itself, so I thought this would be useful.
I am writing this as though the authors have approached me for a technical review of their article. You can think of it as an open letter.