apareció en el número de junio de 1950 de Astounding. Era la primera historia que escribía que trataba principalmente de computadoras (las llamé «Máq… - Isaac Asimov

Do you want the truth behind it all?" "Go ahead, Cutie. You're amusing." "The Master created humans first as the lowest type, most easily formed. Gradually, he replaced them by robots, the next higher step, and finally he created me, to take the place of the last humans. From now on, I serve the Master.

They're not bad fellows, Lee, when they stick to their Encyclopedia – and we'll see that that's where they stick in the future. They're hopelessly incompetent when it comes to ruling Terminus. Go away now and start things rolling. I want to be alone.

They are against the Machine?" "They would be against mathematics or against the art of writing if they had lived at the appropriate time.