sentences:  The four-dimensionalist can argue that the persisting object is a single space-time worm which has all the replacement stages as temporal parts, or in the case of the stage view that each succeeding stage bears a temporal counterpart relation to the original stage under discussion.Secondly, problems of temporary intrinsics are argued to be best explained by four-dimensional views of time that involve temporal parts.As presented by David Lewis, the problem of temporary intrinsics involves properties of an object that are both had by that object regardless of how anything else in the world is (and thus intrinsic), and subject to change over time (thus temporary).