He paused, as though to adjust the matter in his mind. "But suppose Time stopped. Or, rather, suppose man caught up with Time, raced the universal enemy, tracked him to his lair? That would account for the names being the same. Dunn still breathes and Clarkson endures, or their descendants. At any rate, the idea of them persists. Perhaps this clock that they wear abolished death and successive generations. Of course, it seems like a joke to us, but we've got to drop our sense of humour for the time being.".