“You expect a space war—like a hyperwave shoot-’em-up.” “No, I doubt that that would be necessary. A civilization that is expanding through space will not need our few worlds and will probably be too intellectually advanced to feel the need to batter its way into hegemony here. If, however, we are surrounded by a more lively, a more vibrant civilization, we will wither away by the mere force of the comparison; we will die of the realization of what we have become and of the potential we have wasted. Of course, we might substitute other expansions—an expansion of scientific understanding or of
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