The process of establishing a literary canon is seen by some as, in part, an attempt by certain scholars to make their own labors central and to relegate the work of others to marginal status.
Tack on attention information, (so that a personal device knows where you are and what you do), and you've got a valuable service that can make recommendations based on place.
Zippers allow that focal node to travel around the tree, getting constant-time access wherever you are (not including the traversal time to reach the node).
And as Eclipse and its associated plug-ins continue to grow, the Eclipse Foundation will be well-positioned to manage that growth and resulting complexity.