you want directories? really?

[davetheguru]

But is a tree structure really optimal? Is it because of almost a generation of computers having a tree structure in a file system and our paradigm is constrained to that? Is there a better structure (perhaps based on how our brain works)?

Can the Prime's structure really be considered flat? Apps can have functions and variables with them. So it can be a tree but perhaps not as deep. (Call it a "bush"?).

If you allow many levels to a tree, will it allow for a more cluttered storage (more "dead wood")? Levels more than a few start to get humanly hard to manage don't they? And the Prime is just a calculator platform, not a mainframe computer that collect every email ever sent.

If it is common to have lots of apps at the "root" level on the Prime --such that it is a pain to swipe the window to the app of interest, perhaps a way of grouping them (providing another level) might be handy. Perhaps grouping app (objects) by class pages. But to help efficiency it may be handy too, to allow an app to belong to one or more classes (the classes can be category "keywords").