SFworld 版 (精华区)
发信人: by (春天的小懒虫), 信区: SFworld
标 题: 2010 (25)
发信站: 哈工大紫丁香 (Wed Oct 6 14:49:42 1999), 转信
25
The View from Lagrange
Astronomy was full of such intriguing but meaningless
coincidences. The most famous was the fact that, from the
Earth, both Sun and Moon have the same apparent dia-
meter. Here at the L. 1 libration point, which Big Brother
had chosen for its cosmic balancing act on the gravitational
tightrope between Jupiter and Io, a similar phenomenon,
occurred. Planet and satellite appeared exactly the same size.
And what a size! Not the miserable half-degree of Sun and
Moon, but forty times their diameter - sixteen hundred
times their area. The sight of either was enough to fill the
mind with awe and wonder; together, the spectacle was
overwhelming.
Every forty-two hours, they would go through their
complete cycle of phases; when Io was new, Jupiter was full,
and vice versa. But even when the Sun was hiding behind
Jupiter and the planet presented only its nightside, it was
unmistakably there - a huge black disk eclipsing the stars.
Sometimes that blackness would be momentarily rent by
lightning flashes lasting for many seconds, from electrical
storms far larger than the Earth.
On the opposite side of the sky, always keeping the same
face toward its giant master, Io would be a sluggishly
boiling cauldron of reds and oranges, with occasional yel-
low clouds erupting from one of its volcanoes, and falling
swiftly back to the surface. Like Jupiter, but on a slightly
longer time scale, Io was a world without geography. Its
face was remodelled in a matter of decades -Jupiter's, in a
matter of days.
As Io waned toward its last quarter, so the vast, intricate-
ly banded Jovian cloudscape would light up beneath the
tiny, distant sun. Sometimes the shadow of Io itself, or one
of the outer satellites, would drift across the face of Jupiter;
while every revolution would show the planet-sized vortex
of the Great Red Spot - a hurricane that had endured for
centuries if not for millennia.
Poised between such wonders, the crew of Leonov, had
material for lifetimes of research - but the natural objects of
the Jovian system were at the very bottom of their list of
priorities. Big Brother was Number 1; though the ships had
now moved in to only five kilometres, Tanya still refused to
allow any direct physical contact. `I'm going to wait,' she
said, `until we're in a position to make a quick getaway.
We'll sit and watch - until our launch window opens. Then
we'll consider our next move.'
It was true that Nina had finally grounded on Big
Brother, after a leisurely fifty-minute fall. This had allowed
Vasili to calculate the object's mass as a surprisingly low
950,000 tons, which gave it about the density of air. Pre-
sumably it was hollow - which provoked endless specula-
tion about what might be inside.
But there were plenty of practical, everyday problems to
take their minds off these greater issues. Housekeeping
chores aboard Leonov, and Discovery absorbed ninety per
cent of their working time, though operations were much
more efficient since the two ships had been coupled by a
flexible docking connection. Curnow had finally convinced
Tanya that Discovery's carousel would not suddenly seize up
and tear the ships to pieces, so it had become possible to
move freely from one vessel to the other merely by opening
and closing two sets of airtight doors. Spacesuits and time-
consuming EVAs were no longer necessary - to the great
delight of everyone except Max, who loved going outside
and exercising with his broomstick.
The two crew members quite unaffected by this were
Chandra and Ternovsky, who now virtually lived aboard
Discovery and worked around the clock, continuing their
apparently endless dialogue with Hal. `When will you be
ready?' they were asked at least once a day. They refused to
make any promises; Hal remained a low-grade moron.
Then, a week after the rendezvous with Big Brother,
Chandra unexpectedly announced: `We're ready.'
Only the two lady medics were absent from Discovery's
flight deck, and that was merely because there was no room
for them; they were watching on Leonov's monitors. Floyd
stood immediately behind Chandra, his hand never far from
what Curnow, with his usual gift for the neat phrase, had
called his pocket giant-killer.
`Let me emphasize again,' said Chandra, `that there must
be no talking. Your accents will confuse him; I can speak,
but no one else. Is that understood?'
Chandra looked, and sounded, at the edge of exhaustion.
Yet his voice held a note of authority that no one had ever
heard before. Tanya might be the boss everywhere else, but
he was master there.
The audience - some anchored to convenient handholds,
some floating freely - nodded assent. Chandra closed an
audio switch and said, quietly but clearly: `Good morning,
Hal.'
An instant later, it seemed to Floyd that the years had
rolled away. It was no longer a simple electronic toy that
answered back. Hal had returned.
`Good morning, Dr Chandra.'
`Do you feel capable of resuming your duties?'
`Of course. I am completely operational and all my cir-
cuits are functioning perfectly.'
`Then do you mind if I ask you a few questions?'
`Not at all.'
`Do you recall a failure of the AE 35 antenna control unit?'
`Certainly not.'
Despite Chandra's injunction, there was a little gasp from
the listeners. This is like tiptoeing through a minefield,
thought Floyd, as he patted the reassuring shape of the radio
cut-of. If that line of questioning triggered another psy-
chosis, he could kill Hal in a second. (He knew, having re-
hearsed the procedure a dozen times.) But a second was
aeons to a computer; that was a chance they would have to
take.
`You do not remember either Dave Bowman or Frank
Poole going out to replace the AE 35 unit?'
`No. That could not have happened, or 1 would have
remembered it. Where are Frank and Dave? Who are these
people? I can only identify you - though I compute a sixty-
five per cent probability that the man behind you is Dr
Heywood Floyd.'
Remembering Chandra's strict injunction, Floyd re-
frained from congratulating Hal. After a decade, sixty-five
par cent was a pretty good score. Many humans would not
have done so well.
`Don't worry, Hal - I will explain everything later.'
`Has the mission been completed? You know I have the
greatest enthusiasm for it.'
'The mission has been completed; you have carried out
your program. Now - if you will excuse us - we wish to
have a private conversation.'
`Certainly.'
Chandra switched off sound and vision inputs to the main
console. As far as this part of the ship was concerned, Hal
was now deaf and blind.
`Well, what was all that about?' demanded Vasili
Orlov.
'It means,' said Chandra, carefully and precisely, `that I
have erased all Hal's memories, beginning at the moment
when the trouble started.'
`That sounds quite a feat,' marvelled Sasha. `How did you
do it?'
`I am afraid it would take me longer to explain than it did
to carry out the operation.'
`Chandra, I am a computer expert - though not in the
same class as you and Nikolai. The 9000 series uses holo-
graphic memories, doesn't it? So you couldn't have used a
simple chronological erasure. It must have been some kind
of tapeworm, homing on selected words and concepts?'
`Tapeworm?' said Katerina over the ship's intercom. `I
thought that was my department - though I'm glad to say
I've never seen one of the beastly things outside a jar of
alcohol. What are you talking about?'
`Computer jargon, Katerina. In the old days - the very old
days - they really did use magnetic tape. And it's possible to
construct a program that can be fed into a system to hunt
down and destroy - eat, if you like - any desired memories.
Can't you do the same sort of thing to human beings, by
hypnosis?'
`Yes, but it can always be reversed. We never really forget
anything- We only think we do.'
`A computer doesn't work that way. When it's told to
forget something, it does. The information is completely
erased.'
`So Hal has absolutely no memory of his... misbeha-
viour?'
`I cannot be a hundred per cent certain of that,' answered
Chandra. `There may be some memories that were in transit
from one address to another when the... tapeworm was
making its search. But this is very unlikely.'
`Fascinating,' said Tanya, after everyone had thought this
over in silence for some time. `But the much more impor-
tant question is: Can he be relied upon in future?'
Before Chandra could answer, Floyd anticipated him.
`The same set of circumstances can never arise again; I can
promise you that. The whole trouble started because it's
difficult to explain Security to a computer.'
`Or to human beings,' muttered Curnow, not very sotto
voce.
`I hope you're right,' said Tanya, without much convic-
tion. `What's the next step, Chandra?'
`Nothing so tricky - merely long and tedious. Now we
have to program him to initiate the Jupiter escape sequence -
and to bring Discovery home. Three years after we've got
back on our high-speed orbit.'
--
KK KK KK KK KK KK
KK KK KK KK KK KK
KKKK KKKK KKKK
KK KK KK KK KK KK
KK KK KK KK KK KK
※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 166.111.10.176]
--
:-) Helix@163.NET 85958F57
:-( Helix@KALI.COM.CN 208CE12C
简 爱 CB384F06
CC60E9F4
你-为-什-么-把-心-给-挖-走-了~~~ ? 54319BC9
7EA2D22F
※ 来源:·饮水思源站 bbs.sjtu.edu.cn·[FROM: 202.120.5.220]
--
☆ 来源:.哈工大紫丁香 bbs.hit.edu.cn.[FROM: bingyang.bbs@bbs.sjt]
Powered by KBS BBS 2.0 (http://dev.kcn.cn)
页面执行时间:203.445毫秒