# Benefits of Using Flat Organizational System for PKM **When trying to archive a piece of knowledge you need to make decisions at multiple points** (one per hierarchy level) and **a single mistake will then lead to retrieval problems later**. ![[Tagging Is Broken#^9bxw3c]] When making decisions on where to place stuff, what happens when a piece of knowledge can go into multiple places? Yes, that indicates a poor organization system but good luck coming up with a perfect structure. **This means that filing stuff (putting it away in its proper place) is an expensive operation, one that requires cognitive energy, not only when putting stuff away but also when retrieving stuff** (because you need to go through the same thought process). ![[Tagging Is Broken#^iltg6e]] To make matters even worse, precisely because these decisions are non-trivial, it's almost guaranteed that different people will come up with different answers. Because of this energy cost, **people will tend to procrastinate archiving stuff** (human nature), and due to that procrastination, everyone will **eventually lose trust in the system** (I believe it's [[David Allen]] who said that **if filing is difficult you will not file, you will stack**). What if you're not procrastinating and willing to put stuff in the right place but stuff if not all that important (but you don't know that at the time)? You just wasted important energy in making those decisions for nothing.