 Another common thought, often adverted to in discussion of the two primary notions, is that singular structure, whether in the form of missing points or incomplete paths, must be related to pathological behavior of some sort in the singular spacetime's curvature, that is, the fundamental deformation of spacetime that manifests itself as “the gravitational field”. For example, some measure of the intensity of the curvature (“the strength of the gravitational field”) may increase without bound as one traverses the incomplete path. 