[Qz]

Yes, I don't think the everything-as-a-file-manager concept is where it will go. The same subject is discussed on the ObjectBrowser page, and that concept is very much in line with what I came up with separately. The basic idea being that the user interacts directly with (mostly data) objects, and new functionality is added by adding commands that do something involving one or more objects. Basically along the lines of unix piping, but not restricted to working on plaintext only. Tabs are really a bit of a kludge, I think a proper Zoomable Interface with automatic layout is the best choice as far as the UI goes.