One consequence of these positions that Unger points to is the revision of the concept and function of mathematics. If there is only one world drenched in time through and through, then mathematics cannot be a timeless expression of multiple universes that captures reality. Rather, Unger argues that mathematics is a means of analyzing the world removed of time and phenomenal distinction. By emptying the world of time and space it is able to better focus on one aspect of reality: the recurrence of certain ways in which pieces of the world relate to other pieces. Its subject matter are the structured wholes and bundles of relations, which we see outside mathematics only as embodied in the time-bound particulars of the manifest world. In this way, mathematics extends our problem solving powers as an extension of human insight, but it is not a part of the world.