SFworld 版 (精华区)
作 家: xian (去日留痕) on board 'SFworld'
题 目: The Dominus Demonstration (5)
来 源: 哈尔滨紫丁香站
日 期: Thu Sep 25 11:57:52 1997
出 处: byh.bbs@bbs.net.tsinghua.edu.cn
发信人: KingKongKang (KKK经理/裁判), 信区: SFworld
标 题: The Dominus Demonstration (5)
发信站: BBS 水木清华站 (Sun Aug 3 18:52:47 1997)
"All right, gentlemen. We're down to the last lap. Speak
now, or not at all."
Armstrong leaned back in the center seat and waited.
The three men were sitting in line in comfortable chairs
in the visitors' suite, staring out of a deep window of
one-way glass. The lights in the room were turned low, so
that they could observe the clearing afternoon sky. The
forecast had definitely called for more snow, but the clouds
of the past week were dispersing. They had drawn out to
long, fragile wisps. The sky directly overhead was taking
on a deep, clear blue, and the temperature was dropping
rapidly.
Four stories below, the flat area beyond the complex
was covered with thousand of people, standing, talking
quietly together, or kneeling in small groups. As far as the
horizon, moving figures could be seen. More people were
arriving, steadily converging on the crowded area. TV
cameraman, readily distinguished by their warm head-
gear, weaved through the assembly.
"If you have nothing to say," went on Armstrong after a
long silence from the other two, "then let me tell you my
main worry. It's not the machine and the things I've
heard about it. It's the two of you. Here I am with the
principal designers of Dominus. Hardware and software,
you've nursed this along from the beginning. True?"
Jim Bevin looked across at Rafael Chang, and both men
gave slight nods.
"So it's nearly nine years of your lives," said Arm-
strong. "That's what you each have invested in this proj-
ect. now we're approaching the final step, the fruition of
all that work. And suddenly I receive a request from Wash-
ington. The project has been receiving pressure from two
different directions -- one to delay it, the other to force it
to proceed on schedule. Would I provide an independent
review, and make a final decision? Very well. I agreed, I
came here, and I've listened and learned a lot. But through
all of the listening and learning, one thing has been
missing -- conspicuous by its absence. Know what I'm talk-
ing about?"
The other two looked perplexed. After a few seconds
Chang silently shook his head.
"All right, I'll tell you." Armstrong's eyes were old.
thoughtful beneath the wrinkled brow. "I was waiting for
the big pinch from both of you -- to go ahead and put
Dominus on-line. Even if that would have been the wrong
decision, it was natural for you to try to persuade me. The
project is your baby, many years of work. But you haven't
said one damned word to influence my opinion. I want to
know why you haven't. Rafael?"
Chang hesitated, rubbing at the dark bristles on his
chin. By late afternoon he always looked unshaven. "Yeah.
You're right." He sighed. "We've not been pushing. A year
ago Jim and I would have said, get moving, turn Dominus
on as soon as possible, and to hell with more delays. But
we've had some strange experiences over the past few
months. They might not make an impression on you, or
anybody who hasn't lived with this project, but they've
affected us."
"We didn't want to talk about them," added Bevin. "It
took months before we could bring ourselves to mention
them to each other. We felt sure nobody else would
understand."
"Try me."
"I can give you a good example," said Chang. "Even
with only a fraction of the system hooked up, Dominus is
still far and away the most powerful computer ever built.
So I wanted to take advantage of that by analyzing socio-
political problems, where nobody has good models be-
cause the input variables are so fuzzy."
"What sort of problem? Do you mean political systems?"
"No, I'm talking mainly of resource allocation -- how
should we distribute food and materials? We stated the
problem as well as we know how and let Dominus go to
work. Most of the answers we got looked very good, plau-
sible and novel. But one output advised a population
reduction of certain countries to zero. If we wiped out the
people there, Dominus said, the overall world resource
problem looked a lot cleaner. At first that output was
funny. Then it was scary. Dominus stated it as the best
solution. Gruesome. That's when I started to think of the
machine as crazy, or at best having its own sense of
humor -- and a pretty black one, by any standards."
"Did you evaluate your assumptions and your inputs?
Garbage in, garbage out, even for something as advanced
as Dominus."
"That's not the way Dominus operates. It has access to
all the data banks on this site, and it draws from them
whatever it needs. After I got that answer I began to
worry, but then Jim told me the trouble probably came
from working with an incompletely assembled system.
When we had all of Dominus running together the prob-
lems I was having would go away."
"Sounds reasonable to me, Rafael."
"It did to me, too," added Bevin. "Then I got worries of
my own. As you know, I don't care much about the soft-
ware. There are quite enough hardware worries to keep
me busy. The design for the attosecond memory came out
of Magsman Three, with the associative memory added. It
works fine, and it's wonderful as long as you don't look at
the implications. I got worried when I did a little simple
arithmetic. Dominus can do a multiplication in ten to the
minus-eighteenth seconds. That's so little, light travel
only a couple of times the diameter of a hydrogen atom.
The logical circuit units in the attosecond memory are
thousands of times bigger than that -- so how are the sig-
nals getting between the components?"
"Parallel logic? That's the obvious way you'd increase
overall processing speed."
"It is, general, but it's not the answer. The attosecond
memory has a serial design logic -- in fact, a faster unit is
under consideration now that will operate with parallel
components and should be a thousand times as fast. So
the attosecond memory looked like an impossibility. Only
it worked."
"I see." Armstrong sat silent for half a minute, staring
out into the gathering dusk. "So what's your explanation?"
"I don't have an explanation, except through a bigger
mystery. I finally asked for a listing of all the theorems
and papers employed in the Magsman design for the fast
memory. They were exactly the sort of things I expected --
papers on solid state phenomena, superconductivity, and
information theory. But there was one exception. I found
twenty-one citations of papers relating to Bell's Theorem."
"Never heard of it."
"Not too surprising. It's a result from quantum theory.
One interpretation of the theorem is that non-local phe-
nomena are possible; actions in one place can be coupled
to actions at another without being limited by the speed
of light. If I let my imagination roam free, I'd decide that
signal transmission within the attosecond memory is not
lightspeed limited."
"Have you looked for confirmation elsewhere?"
Bevin grimaced gloomily. "I sent the output and the
suggestion to CalTech. So far, no answers. See why we've
been worrying, General?"
"I do. Anything else?"
"Rafael has one. But it's still too wild for me."
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