These WorldBuilders specialize in hypothetical exoplanets around existing stars. Our work has been outpaced by the discoveries of astronomers using the Kepler Space Telescope and other tools and that is great news. It means that, at some future point, WorldBuilders would be able to refine their hypotheses down to the real planet level. With any luck, the discovery of life on other habitable planets will outstrip that effort. Then we could turn our efforts towards communication with exoplanetary species.