Root & BranchIn Root & Branch, an exhibition at the Princeton University Art Museum from July 14 December 2, 2012, curator Joel Smith assembled a collection of artworks and objects around the form of a tree. In its introduction, he describes the tree as a pervasive and fundamental metaphorthe road branches, one problem is rooted in another. But he also shows how the tree is a tool. The hierarchy, grouping and subdivision implicit in its form can be used as a