Technologists have increasingly tossed around complicated terminology for organizing information. This a translation for less technical business people. Organizing information in various structures help discoverability and understand-ability. Obscuring the techniques with unnecessarily complex terminology is counter to this goal . This uses familiar metaphors like the Dewey Decimal System to help take the mystery out of these terms. This presentation also breaks down the concepts regarding which ones are more, or less, flexible and abstract. This helps users understand the advantages of the various information classification approaches.