For those who argue that the hierarchical filing system isn't going anywhere, consider Yahoo vs Google. Yahoo was once a hierarchical filing system for the web,

For those who argue that the hierarchical filing system isn't going anywhere, consider Yahoo vs Google. Yahoo was once a hierarchical filing system for the web, Google's philosophy was 'search don't sort'. For those that argue that tags aren't hierarchical filing systems, consider that '/Documents/Theses/TagsVsHierarchies' is the same as tagging 'TagsVsHierarchies' with 'Documents' and 'Theses'. It's turtles all the way down.