1. A system for providing a dynamic user interface for a dense three-dimensional scene with a navigation assistance panel, comprising: a three-dimensional scene to logically hold clusters, each cluster comprising one or more concepts and arranged proximal to each other such cluster to form a cluster spine; a two-dimensional display to display each cluster spine projected relative to a stationary perspective; and a user interface, comprising: controls to operate on a view of the cluster spines in the display; a compass to logically frame the cluster spines within the display; a label to identify one such concept in one or more of the cluster spines appearing within the compass; a plurality of slots in the two-dimensional display positioned circumferentially around the compass, wherein each label is assigned to the slot outside of the compass for the cluster spine having a closest angularity to the slot; and a perspective-altered rendition of the two-dimensional display comprising the projected cluster spines and a navigation assistance panel framing an area of the perspective-altered rendition corresponding to the view of the cluster spines in the display.