Abstract: Method and system for allowing temporal navigation or time travel of data or data object across time are disclosed. In one embodiment, events that affected data objects are retrieved and inversed to revert the data objects back to a selected point-in-time, forward events are applied to move data objects to forward point-in-time. A sliding bar or a time dial allows a user to move data objects back and forward in time. Events that are applied may be a selected subset of events, altered events, new events, or events generated synthetically or any combinations thereof, for instance, to create counterfactual history.