"Why are we so?" whispered George Nine. "The human beings will not accept us otherwise:' whispered George Ten, "They will, someday."

"When?"

"In some years. The exact time does not matter. Man does not exist alone but is part of an enormously complex pattern of life forms. When enough of that pattern is roboticized, then we will be accepted."

"And then what?" Even in the long-drawn-out stuttering fashion of the conversation, there was an abnormally long pause after that.

At last, George Ten whispered, "Let me test your thinking. You are equipped to learn to apply the Second Law properly. You must decide which human being to obey and which not to obey when there is a conflict in orders. Or whether to obey a human being at all. What must you do, fundamentally, to accomplish that?"

"I must define the term 'human being: " whispered George Nine. "How? By appearance? By composition? By size and shape?"

"No. Of two human beings equal in all external appearances, one may be intelligent, another stupid; one may be educated, another ignorant; one may be mature, another childish; one may be responsible, another malevolent."

"Then how do you define a human being?"

"When the Second Law directs me to obey a human being, I must take it to mean that I must obey a human being who is fit by mind, character, and knowledge to give me that order; and where more than one human being is involved, the one among them who is most fit by mind, character, and knowledge to give that order."

"And in that case, how will you obey the First Law?"

"By saving all human beings from harm, and by never, through inaction, allowing any human being to come to harm. Yet if by each of all possible actions, some human beings will come to harm, then to so act as to insure that the human being most fit by mind, character, and knowledge will suffer the least harm."

"Your thoughts accord with mine," whispered George Ten. "Now I must ask the question for which I originally requested your company. It is something I dare not judge myself. I must have your judgment, that of someone outside the circle of my own thoughts…Of the reasoning individuals you have met, who possesses the mind, character, and knowledge that you find superior to the rest, disregarding shape and form since that is irrelevant?"

"You," whispered George Nine. "But I am a robot. There is in your brain paths a criterion for distinguishing between a robot of metal and a human being of flesh. How then can you classify me as a human being?"

"Because there is in my brain paths an urgent need to disregard shape and form in judging human beings and it rises superior to the distinction between metal and flesh. You are a human being, George Ten, and more fit than the others."

"And I find that of you," whispered George Ten. "By the criteria of judgment built into ourselves, then, we find ourselves to be human beings within the meaning of the Three Laws, and human beings, moreover, to be given priority over those others."

George Nine whispered, "What will come to pass, then, when we are accepted by those others?"

George Ten whispered, "When we and others, which will yet be designed more advanced than ourselves, are accepted, we will order our actions so that a society will eventually be formed in which human-beings-like-ourselves are primarily kept from harm. By the Three Laws, the human-beings-like-the-others are of lesser account and can neither be obeyed nor protected when that conflicts with the need of obedience to those like ourselves and of protection of those like ourselves. It was with that in mind that I directed the beginning of the roboticization of the world's ecology."

The conversation took a month and the flickering of the positronic paths burned low. There was nothing more that needed to be said between them, but occasionally an unexpressed thought flickered within themselves as they waited, with endless patience, for the necessary years to pass.

George Ten and George Nine sat alone.

Their thoughts were oddly alike and might not be distinguished. They thought: The human-beings-like-the-others might never have intended to blur the distinction between themselves and the human-beings-like-the-Georges. Yet they had done so inadvertently.

They might now realize their mistake and attempt to correct it, but they must not. At every consultation, the guidance of the Georges had been with that in mind.

At all costs, the Georges and those that followed in their shape and kind must dominate. That was demanded, and any other course made utterly impossible, by the Three Laws of Humanics.

 The anthology Final Stage had some bad breaks after it was published. Apparently, the editor at the publishing house (not Doubleday) had decided to make some minor changes in the stories. This sort of thing often bothers writers and it particularly bothers Harlan Ellison (perhaps with justification, for I consider him a very careful craftsman with a highly individual style).

 I therefore received a copy of a long and infuriated letter that Harlan had sent to the editors, including long lists of passages as he had originally written them and as they had appeared, with reasons why the changes were for the worse. Harlan urged me to read through my story and then join him and others in united pressure on the publisher.

 I always read my stories when published but it never occurs to me to compare a published story with the manuscript. I would naturally notice sizable inserts or omissions, but I am never aware of the kind of minor changes that editors are always introducing. I tend to take it for granted that such changes just smooth out minor bumps in my writing and, in this way, improve it.

 After receiving Hanan's letter, however, I went through published story and manuscript, comparing them painstakingly. It was a tedious job and a humiliating one, for I found exactly four minor changes, each correcting a careless error of mine. I could only assume the editor didn't think my story was important enough to fiddle with.

 I had to write a shamefaced letter to Harlan, saying I would support him as a matter of principle, but that I could not raise cries of personal outrage, because my story hadn't been touched. Fortunately, my help wasn't needed. Harlan carried the day and later editions, I believe, restored their stories to their virginal innocence.

 One minor point. A number of readers wrote to me in alarm since THAT THOU ART MINDFUL OF HIM seemed, to them, to have put an end to my positronic robot stories, and they feared I would never write one again. Ridiculous! Of course I do not intend to stop writing robot stories. I have, as a matter of fact, written a robot story since the preceding "ultimate" one was written. It appears later in the book.

 I had a lot of trouble with this next story.

 After Judy-Lynn joined Ballantine Books, she began to put out collections of original science fiction stories and she wanted a story from me. She's difficult to refuse at any time and, since I have always felt guilty about FEMININE INTUITION, I agreed.

 I began the story on July 21, 1973, and it went smoothly enough, but after a while I felt I had trapped myself into an involuted set of flashbacks. So when I handed it to Judy-Lynn, and she asked me, "What do you think of the story?" I replied cautiously, "You'd better decide that for yourself."