Fuzzy spacetime from a null-surface version of GR

The null-surface formulation of general relativity – recently introduced – provides novel tools for describing the gravitational field, as well as a fresh physical way of viewing it. The new formulation provides local'' observables corresponding to the coordinates of points --- which constitute the spacetime manifold --- in a {\em geometrically defined chart\/}, as well as non-local observables corresponding to lightcone cuts and lightcones. In the quantum theory, the spacetime point observables become operators and the spacetime manifold itself becomes quantized’‘, or ``fuzzy’'. This novel view may shed light on some of the interpretational problems of a quantum theory of gravity. Indeed, as we discuss briefly, the null-surface formulation of general relativity provides (local) geometrical quantities — the spacetime point observables — which are candidates for the long-sought physical operators of the quantum theory.