And also so that they could give the peoples of the world some agency. Not to be confused with the Agent that had torn up the moon. "Agency," in the lingo of the sorts of people who had set up this announcement, meant giving people options, giving them some things that they could do to have an effect—imaginary or not. There was nothing they could do, of course, about the Hard Rain. And very few of them could contribute on a technical level to the Cloud Ark—there were only so many people qualified to go on space walks or assemble rocket engines, and those had already been mobilized.