<h2><SPAN name="c6" id="c6">6</SPAN></h2>
<p>We were not the only passengers in the eight-cabined forward section
of the big sky ship which had been assigned to us. But it had taken us
almost a week to get acquainted. To get really acquainted, that is, so
that we could relax and feel at ease and really enjoy one another's
company.</p>
<p>We were sitting in lounge chairs on the long promenade deck that ran
parallel with all eight of the cabins, staring out through translucent
crystal at a wide waste of stars.</p>
<p>Sitting in the first chair was a tall, sturdily built man of
thirty-eight, with keen blue eyes and a dusting of gray at his temples.
His name was Clifton Maddox and he was an electronic engineer. He had
stories on tap that could turn your hair white, because he had been to
Mars and back eight times.</p>
<p>Seated next to him, with her hand resting lightly on his arm, was a
woman in her early twenties, with honey-blonde hair and eyes that held
unfathomable glints and an enigmatical ingenuousness that could keep a
man guessing in an exciting way. Her name was Helen Melton and she had
eyes only for the man at her side. She had managed to make of the trip
a continuous honeymoon, despite a few lovers' quarrels and the stern
exactions which her work as a medical laboratory technician had imposed
on her.</p>
<p>I mention these two because they were fairly typical of the group as a
whole. They were all unusual individuals, the kind of people you take
a liking to straight off, when you meet them casually at a party and
exchange a few words with them that you keep remembering for days.</p>
<p>Joan and I sat in the last two chairs on the promenade deck, a little
apart from the others. Joan was deep in a book and a little weary of
talking and I ... was thinking about the robots.</p>
<p>The robots were a story in themselves—a story that could bear a great
deal of re-telling. If right at that moment I'd had a son—a bright and
eager lad of six or eight—I'd have set him on my knee and talked about
the robots.</p>
<p>The five hundred passengers in the big sky ship were not alone in the
long journey through interplanetary space. In the last years of the
twentieth century, I'd have taken pains to make very clear to him, and
in the early years of the twenty-first, a great new science had grown
from an infant into a giant.</p>
<p>The science of cybernetics, of giant computers that could do much
of Man's thinking for him on a specialized technological level, had
transformed the face of the Earth and was continuing to transform it at
a steadily accelerating pace.</p>
<p>The rocket's four giant computers were of the newest and most efficient
type—humanoid in aspect, with conical heads, massive metal body-boxes,
and three-jointed metal limbs which had all of Man's flexible
adaptability in the carrying out of complex and difficult tasks.</p>
<p>Robotlike and immense, they towered in the chart room with their
six-digited metal hands on their metal knees, their electronic circuits
clicking, their tiers of memory banks in constant motion, but otherwise
outwardly indifferent to the human activity that was taking place
around them.</p>
<p>Four metal giants in a metal rocket, functioning cooperatively with
Man in the gulfs between the planets, might have made an imaginative
fiction writer of an earlier age catch his breath and glory in
the fulfillment of a prophecy. An H. G. Wells perhaps, or an Olaf
Stapledon. But the reality was an even greater tribute to the human
mind's inventive brilliance than the Utopian dream had been.</p>
<p>The four giant computers were capable of solving problems too technical
for the human mind to master without assistance, usually with
astounding swiftness and always with the more-than-human accuracy of
thinking machines whose prime function was to correlate without error
the data supplied to them on punched metallic tapes, and to perform
intricate mechanical tasks based upon that data.</p>
<p>The robots were tremendous, by any yardstick you might care to apply,
and if I'd had a son—</p>
<p>I stopped thinking about the robots abruptly and sat very still,
listening. A sound I'd heard a moment before had come again, much
louder this time—a chill, unearthly screeching.</p>
<p>The chart room was just outside the eight-cabin section and I could
hear the sound clearly. My nerves again, my over-stimulated imagination?</p>
<p>In space strange and unusual sounds are as common as pips on a radar
screen. It was queer how quickly you got used to them. You had to
walk around with your ears plugged up, in a sense, but the plugs
didn't have to be inserted. They were just natural growths inside your
ears—invisible and without substance, but plugs notwithstanding.
They produced a kind of psycho-somatic deafness which didn't otherwise
interfere with your hearing.</p>
<p>Just the very unusual sounds, the totally inexplicable raspings,
dronings, creakings—usually of short duration—were blotted out.</p>
<p>You didn't hear them unless something deep in your mind whispered:
"This one is different. This is an emergency. Take heed!"</p>
<p>The screeching was very different. It was like nothing I'd ever heard
before, on Earth or in space.</p>
<p>The others must have heard it too, for it had been too loud, the second
time, to be ignored. But apparently that strange acceptance of strange
noises in space which goes with the kind of deafness I've mentioned
had only been shattered for me. The six men and women in the lounge
chairs had looked a little startled for a moment and exchanged puzzled
glances. Which meant, of course, that they had heard it despite the
mental earplugs in some inner recess of their minds. But that didn't
prevent them from shrugging it off and resuming their conversation.</p>
<p>Joan also looked a trifle uneasy. She stopped reading just long enough
to raise her eyes and frown, then became absorbed in the book again.</p>
<p>I got up quietly and pressed her wrist. "See you," I said.</p>
<p>She shut the book abruptly and straightened in her chair. "Where are
you going, Ralph?"</p>
<p>"Just stay right where you are, kitten," I said. "I'll be back in a
moment."</p>
<p>"That screeching noise," she said. "I was wondering about it, Ralph. I
guess you'd better see what's causing it."</p>
<p>So she'd been disturbed by it too, and ignoring it had taken a
deliberate effort of will which I hadn't realized she was exerting. It
made me happy in an odd inner way, because it proved again what I'd
always known ... that we were very close and there were currents of
understanding which flowed back and forth between us and I had a wife I
could be proud of.</p>
<p>"It's probably nothing," I said, not wanting to alarm her. "But I might
as well take a look. It seems to be coming from the chart room."</p>
<p>"All right," she said and squeezed my hand.</p>
<p>I had to open and shut two sliding panels and pass along a blank-walled
passageway to get to the chart room. To my surprise the door was
standing open. It's usually kept locked, because there's no section of
the sky ship where a man who didn't want anyone to suspect that he
harbored within himself the most dangerous kind of destructive impulses
could do more damage.</p>
<p>The shattering of a photo-electric eye or the ripping out of a single
live connection in just one of the four cybernetic robots could have
wrecked the rocket, and sent it spiraling down through the space gulfs
in flaming ruin, depending on just how vital to the robot's functioning
the shattered part happened to be.</p>
<p>There was a security alert system which would have to be disconnected
first, but anyone resourceful enough to get inside the chart room
at all, without identification-disk proof that he had a right to be
there, would have known precisely how to take care of the preliminary
obstacles.</p>
<p>I didn't waste any time in getting to that wide-open door, for my mind
was racing on ahead of me like the most alerted kind of alarm system,
its jaggling warning me that every second counted and that what I
dreaded most might very well be true.</p>
<p>What I actually saw, when I reached the doorway and stood there looking
in, took me completely by surprise. It wasn't the way I'd pictured it
at all. But it was just as unnerving, just as much of a threat to the
safety of the ship and it startled me so I must have looked almost
comic, standing there idiot-still. But there was nothing comic about
what I saw.</p>
<p>The woman I'd almost asked to go to Mars with me was staring straight
at me, her hair still piled up high, a look of terrified appeal in her
eyes. She wasn't alone. She was struggling furiously with a crewman I'd
talked to a few times and neither liked nor disliked—a heavyset man
with high cheekbones and pale blue eyes. He was gripping her savagely
by the wrist and they were both backed up against one of the robot
giants.</p>
<p>Suddenly as I stared her head went back and a convulsive trembling
seized her. She began to scream.</p>
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