My problem with memory is that it goes stale, and updates to facts are often not changing all locations of that fact. Such a system should make it easier to maintain a single source of truth, and versioning, no?
Yes you need a VCS and to recalculate relationships at certain thresholds. It adds a lot of complexity and computarional overhead, which is why there's no uniform widespread graph use
Oh, interesting, is this based on your experience, or is there a reference I could look up? My layman intuition is better grounding should result in more accurate results, is that not the same as better reasoning?