Metrics as Beacons, Not Scorecards: My Take on Software Metrics
Metrics in software development are like fire - handy but dangerous if not handled correctly. Let’s get into a topic that deserves a brighter spotlight: the Hawthorne Effect. This phenomenon describes how people change their behavior when they know they’re being observed. Knowing that metrics like sprint velocity, build frequency, test coverage, or codebase contributions are being scrutinized can shift the team’s focus from delivering value to gaming numbers. Why is the Hawthorne Effect so critical in modern software development? Imagine a development team keenly aware that sprint velocity is being monitored as a performance indicator. The team might be tempted to inflate story points or cut corners to complete tasks faster. Similarly, focusing on build frequency could lead to more frequent but less meaningful builds. And let’s not even get into how aiming for high test coverage could result in poorly designed tests that tick a box but don’t enhance code quality. Joel Spolsky warne...