So all knowledge can be seen as connected, but all knowledge can also be put into hierarchies. Concepts and how those concepts are related is something that peo

So all knowledge can be seen as connected, but all knowledge can also be put into hierarchies. Concepts and how those concepts are related is something that people come up with, rather than being an inherent property of the universe. The idea of forcing yourself to put knowledge into hierarchies is that it makes your thinking more clear, makes it easier to remember where things are, and perhaps paradoxically makes it easier to see how things are related. (Or at least highlights certain types of relationships that are only visible in the context of hierarchies.) I'll admit it's pretty weird at first to only get one root node, I think it took me a couple years to get used to that. But once I embraced it the benefits quickly became clear.