Silo dwellers— When a system's design fails, employees will often create their own designs, implementing new workflows, inventing new categories, and designing new structures. These self-inflicted silos are necessary in such a situation, but are not necessarily better design systems. Instead, silo dwellers rely on the memorization that comes with designing their own systems. In short, one way for a person to find something is to remember where they put it. One way to understand a structure, is to make it yourself. There are obvious flaws in this system. For one, the familiarity of a system that comes with designing it, can give the designer a false sense of security that others will understand the system as well as they do. They may also mistakenly believe what they design today, they will remember tomorrow. It only takes a vacation or the distraction of a special project to leave the system idling. When they return, the system feels foreign and unintuitive. When they learn of their mistake, silo dwellers will simply build a new system, starting the cycle over again, relying on memorization and not principles of good information architecture.