often visually impressive but hard to use low-level structure not conceptual structure sometimes useful “meaningful” at the right level of description: the natural view of something may be much more compact than the “sum of triples” graphs can show heterarchical relations spatial location & proximity should be meaningful - what does it mean to be near or far from a given node? “management” console!
Always needed? No, but can be very powerful. With great power comes difficult problems that need solving! And perhaps a key for leaving the walled garden ad hoc data juggling: forcing users to use a spreadsheet, notebook or back-of-an-envelope to remember and keep track of investigation elements and criteria