There are many reasons why the ancient concept of hierarchy still holds such power today. Some researchers believe that the mind uses hierarchical structures to store information in and retrieve information from long-term memory. For example, the idea of chunking is based on the idea that long-term memory applies a higher category to smaller pieces in working memory to bring them together and make them easier to handle. Some experts believe that a part of the brain called the neocortex retrieves information in a hierarchical way. And certainly the organizational technique of hierarchy is fully
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