The complexity trap and why a clean design is a good idea even if "everything works."
Over the past decade, a recurring phrase I've heard is: "Why replace systems or tools that are functioning well?" The rule of "never change a running system" is often repeated and seems like a golden rule in IT. One potential response to this is described in the concept of the "complexity trap," a phenomenon prevalent especially in the IT industry. For more general information about this phenomenon there are plenty of articles out there.