This article is part of a series about complexity metrics: Measuring complexity What Metrics to Use? The Impact of the Environment “This part of the codebase doesn’t feel right!” This was Dave, your colleague developer, arguing in another never-ending meeting to rewrite a part of your company’s codebase. His arguments? Technical debt, high entropy, and the fear of the legacy system. Our work, as developers, pushes us to take many decisions, from the architectural design to the code implementation.