having a fundamental spacetime view of physics, appears more justified in attempting to construct a quantum theory of gravity. in this talk, for this reason, we adopt a path integral approach, and we attempt to construct a self-consistent realistic histories formulation of quantum theory, namely the "coevents formulation". after revising the histories viewpoint of classical physics, we attempt to apply this to the quantum case. however, the nature of the probabilities arising from the path integral, leads us to alter the classical picture. the new ontology is that of a coevent (or a coarse grained history), and we analyse the consequences of this (relatively) novel proposal.