by Isaac Asimov
“Thales, please monitor the positronic transfer,” Derec said.
“Yes, Derec,” the RI replied.
“Alignment ready,” Rana said.
“Begin.”
Several things happened at once. All the screens on Derec’s board showed sudden changes, most especially the three showing activity in the receptor brain. Where there had been the trace readings of a functioning but unprogrammed positronic net, now the scales indicated a rapidly adapting set of personality algorithms, basic memory notation, and program parameters. Within less than two minutes, the receiving positronic brain became Bogard.
And the trouble started.
“Derec,” Thales said, “there is a rejection algorithm working.”
“What?”
“The receptor is rejecting the contents. It carries an unassimilable paradox.”
Now Derec saw it: a discontinuity starting in the memory pathways and spreading into the personality. The two aspects were drifting out of sync with each other. The receptor brain was trying to refuse the information. Positronic brains carried certain self-protects in their initial make-up which prevented them being programmed in any way that conflicted with the Three Laws.
“How about the memory dump?”
“Reception and encoding nominal.”
“Bypass the personality sectors,” Derec told Rana.
Rana nodded, her fingers dancing on her console. Gradually, the discontinuity flattened out and the transfer proceeded. By circumventing that part of the positronic brain which manifested as a robot’s personality, the information could now load as simple data.
“Once it’s all transferred,” Derec said, “then we’ll try adding the rest.”
Rana frowned, but continued working. “Set and working. This will take some time–maybe ten minutes. Fifteen.”
“Good.” Derec ran a hand over his face, feeling all the weariness from the day. Had it all happened in less than five days? Yes, and he had been working eighteen out of every twenty-four hours since the Incident. Even so, he knew he should not be this tired. Then again, arguing with Ariel always drained him.
“Was that coffee I saw?” he asked.
“Absolutely,” Rana replied.
“I’ll be right back.”
He wanted to go upstairs and stretch out on the cot, but he walked into the cafeteria instead and poured a cup of coffee. The past few days seemed to both contract and expand in his memory, at once too short a time and too long. He was worn from the distorted time sense.
But he was excited, too. He felt close to an answer. Maybe not the answer, but an important one just the same, and once he had a handle on one relevant fact the rest could be dragged out into the open through sheer persistence.
Unfortunately, right now he could make no sense of anything he had learned.
The com chimed. Derec wandered toward it, intending only to hear who it was.
“Mr. Avery, this is Tathis Kedder. From Union Station? I uh–”
Derec stepped up to the com and pressed ACCEPT. “I’m here, Mr. Kedder. How can I help you?”
“Well, I’m not sure.” Kedder laughed nervously. “I was going over some old logs and, um... there are some inconsistencies in the way the RI was reporting certain things that, well, in light of everything else that’s happened, they made me wonder.”
“What sort of inconsistencies?”
“I’d, uh, rather not discuss it over a comline.”
“I see. Where would you like to talk, then?”
“My apartment? Tomorrow afternoon?”
“Send the address. I’ll be there, Mr. Kedder.”
“Thank you, Mr. Avery. I, uh, I appreciate this.”
The connection broke and Derec grunted. What was this all about now? Reminded, he touched the reconnect for Joler Hammis. The line still came up UNAVAILABLE.
“How come Kedder isn’t looking for new work?” he wondered aloud. “Maybe he is.”
“Derec,” Rana called from the main lab. “I need to show you this.”
Derec returned to the lab. Rana was leaning over a workstation.
“Those flakes you gave me the other night? Look.” She pointed to one of the screens.
The image showed a six-sided lattice structure. The pattern spread over the entire screen... except in three places, where the hexagonal form splintered around an octahedron.
“What...?” Derec said.
“The vertices,” Rana said, “are oxygen atoms. They’re bonding aluminum atoms throughout most of the matrix except here–” she pointed to the octagonal forms “–where they’re bonding faujasite analogs.”
“Analogs... you mean they’re synthetic.”
“As far as I can tell, the whole thing is synthetic. What I mean is, the faujasite molecules are composed of similar components, except instead of electrons in the constituent atoms, these have positrons.”
Derec felt his scalp ripple. “Positrons. You’re telling me this is a brain construct?”
“It’s a construct, but I wouldn’t call it a brain. The basic shape is a zeolite.”
“Zeolites... filters, industrial filters.” Derec shook his head. “Huh?”
“I said the basic shape,” Rana explained. “Those faujasite analogs have one other component that I don’t recognize. The positrons are interacting with the aluminum atoms and transferring themselves like an electrical current from octahedron to octahedron. The aluminum ends up ‘borrowing’ electrons from the oxygen atoms. The resultant oxide sort of follows the current, passing the positrons along. No normal atom wants to keep the positron, so it just travels.”
“Ending up where?”
“It’s looking for another positronic matrix.”
“Why?”
Rana shrugged.
Derec studied the screen. “Industrial filters... zeolites are used in food processors, for reconstituting certain molecules into different combinations... they’re used in gas exchangers. All they’re really designed to do is pass other molecules and recombine them or strip out electrons to make isotopes. What would this be used for?” He chewed his lip. “This is incomplete, isn’t it? Were there any other atoms?”
“A few scattered ions, nothing coherent.”
“Like what?”
“Platinum, a few pyroxenes, stray carbons...” Rana’s voice trailed off.
Derec looked at her. “And?” he prodded.
“Well, there were a few large fragments of long chain carbon atoms–I can’t swear to it, but it looked like a fullerene.”
“A buckyball?”
“No, buckytubes.”
“Superconducting?”
“There wasn’t enough of one left to test, but that would be my bet.”
“Buckytubes... with positrons instead of electrons?”
“No, but the fragmenting looked like it had occurred at that level, like the binding electron shells had been disrupted.”
“As if a positron had been passed through it?”
Again, she shrugged, but now there was a small grin on her face.
“So what we’re looking at,” Derec mused, “is a material designed to find and link with a positronic matrix and pass material into that matrix. A conduit that–what?–attaches parasitically and sets up a single point feedback loop?”
“Fullerenes grow under the right circumstances. If this material permeated the RI”
“There’d be no way to tell without examining the RI itself.” Derec shuddered. “Clever. Somebody has created what amounts to a positronic parasite.”
“But all it could do would be to pass positrons into the system. The charges are opposite for anything else and if it’s a positronic matrix, then it’s still functioning as its own brain.”
“Unless this thing can be used to feed it new information.”
“What kind?” Rana asked.
“Perceptions?”
Rana’s eyes widened. “The game.”
Derec nodded. “The RI took itself off-line duri
ng the assault to playa game. The game was loaded into the system to begin with, but it knew it was a game.”
“But if it came through a secondary matrix that substituted one set of sensory parameters for another–”
“The RI wouldn’t be able to tell which one was reality. At least not right away. It might have reset itself.”
“Or this might have just switched off.”
“Either way, it wouldn’t be able to tell that the false information was coming from outside. This would appear to be just another branch of its own system.”
“Damn.”
“Absolutely damn. I–”
A chime sounded. Rana peered at another console. “Bogard’s finished transferring.”
Derec put Bogard on standby before he brought the receptor brain up. “Thales, I want you to run monitor. Keep the receptor brain from collapsing till we get a complete picture.”
“May I remind you, Derec,” Thales said in its calm way, “that a conflicted positronic brain on the verge of collapse is a chaotic system? I will do what I can, but I guarantee nothing.”
“Do your best, Thales.” Derec touched a contact and watched his screens.
“Would you like me to run a recalibration on Bogard?” Thales asked.
“Can you handle both?”
“Of course.”
Derec glanced at Rana, who smiled at the hint of injured pride in Thales’ voice.
“Go ahead, then.” He studied the readouts. He keyed a set of commands. “Bringing up the surrogate... now.”
All the realtime graphs warped radically.
“What? What? What?” came sharply over the speakers. Derec turned down the decibels.
“Bogard,” he said.
“Y-yes. Who are–what?”
“This is Derec Avery, Bogard. Pay attention to my voice. Center on my voice.”
“D-Derec, yes. I acknowledge–I know–I–yes–”
“Calm down.”
“I am. I–am.”
“Listen to me. Are you listening?”
“Yes, Derec.”
“I require a report. Can you give me a full report of the operation at Union Station?”
“Yes, I–will.”
“Begin report.”
Several seconds passed in silence. The fluctuations displayed on the screens continued.
“Thales?” Derec asked.
“The brain continues nominal for the circumstances,” Thales said.
Derec nodded. “Bogard, report.”
“I cannot!” The response came as a shriek.
“Bogard, center on my voice,” Derec said calmly. “Pay attention to my voice.”
The robot paused. “Yes, Derec.”
“I require your report.”
“Yes.”
Again, the silence stretched. As Derec was about to make his request again, Bogard’s voice finally responded.
“I failed!” it shouted.
“Report, Bogard,” Derec insisted.
Suddenly, the chaos on Derec’s screens seemed to settle down slightly.
“Report on security operation,” Bogard said. “Subject: Eliton. Theater: the Gallery at Union Station, Washington, D. C.”
Derec looked at Rana, who seemed surprised.
“Continue,” Derec said.
“All telemetry reports optimal. Crowd control is in effect. Communications and sensor telemetry established realtime through Resident Intelligence. Surveillance reports zero infiltration of threatening subjects. Police have blocked admission to several protestors who appear on their trouble list. Robotic security maximum. Crowd density acceptable, assessment acceptable, the word from One is Go.
“The limo stops at main entrance. We are met by Eliton’s field security team. I am assigned operational control to Agent Mia Daventri. She indicates that the situation, while apparently chaotic, is acceptable. I allow Senator Eliton to emerge from the limo first per prearranged program. I follow immediately and perform an on-site scan. The crowd is noisy and hostile, but belligerence is kept at the level of verbal protest. No indication of immediate threat. Per scheduled conditions I uplink to Resident Intelligence for optimal security coordination. The security team moves ahead. I stay one meter behind Senator Eliton all the way to the ceremonial platform.
“I–mission parameter amendation–tier four, level B-nine–proceed sublevel sixteen–”
“Bogard, stop,” Derec ordered. “Clarify last sentence.”
“Mission parameter amendation.”
“Understood. What is the nature of the amendation?”
“Circumvention tactic. Request movement to tier four–’”
“Bogard, stop. Clarify. Circumvention of what? You are performing observe and protect duties for Senator Eliton. What circumvention?”
Bogard paused. “I do not know. Missing modules, data incomplete.”
“Very well, Bogard. From whom have you received this amendation?”
“Source–direct-link, Resident Intelligence, Union Station.”
Derec leaned forward. “Proceed with report. You followed Senator Eliton to the ceremonial platform. What happened then?”
“I continue monitoring security channels. Everything is continuing optimal. There is movement in the audience, but floor security indicates that everything is acceptable. RI reports everything under control. The assembly is informed that the Spacer legations are arriving. Senator Eliton takes his prearranged position to greet Ambassador Humadros. I–”
The robot fell silent.
“Bogard?” Derec prodded.
“Mission parameter amendation to defence standby, level twelve”
“What’s it talking about?” Rana asked. “We don’t have any routines that run by levels like that.”
“Bogard, reset,” Derec said. “Report events, bypass further program modifications.”
“They are shooting. They are shooting. They are shooting.” Bogard repeated the sentence, almost mantralike, until Derec interrupted.
“Who? Bogard, follow report protocols. Sequencing–”
“Explosions occur all around the outer wall of the gallery. They are harmless, smoke and noise, no fragmentation. Loud. The humans are frightened. Then the shooting begins. I see several people rush from the crowd carrying weapons. They begin shooting at us. Telemetry from RI indicates situation normal. I step forward and enshield Senator Eliton. My primary concern is Senator Eliton. Other humans are falling from injuries. My primary concern is Senator Eliton. Ambassador Humadros is my secondary, but she is out of my teach. Senator Eliton is demanding that I secure her as well. I see her, frightened, four-point-six meters away. I cannot be responsible for other humans outside the limits of my priority. First Law violation. I alert the nearest human security, Agent Daventri, and indicate Ambassador Humadros’s situation. I shunt response to hierarchical buffer. My primary concern is Senator Eliton”
“All right, Bogard. You are tending your primary. What happens next?”
“I perceive that the majority of the shots from the assailants are illusions, part of an internal scenario run by the RI. There are no projectiles emerging from their weapons. This is inconsistent with my own sensor telemetry. I count nine whose weapons are dangerous. I cannot locate Senator Eliton. I cannot locate Senator Eliton. My primary is changed. I am to protect Ambassador Humadros. I retract enshielding and proceed to cover her, but I am not fast enough. Ambassador Humadros falls from a puncture to the throat.”
“What happened to Eliton?” Rana asked, dismayed.
“I don’t–” Derec began.
“I search for my previous primary,” Bogard continued. “I see Senator Eliton. He is in the open. He is vulnerable. I move to enshield him. I am not fast enough. He falls from a puncture to the chest. I move to administer medical attention, but I scan no pulse, no respiration, falling body temperature. Senator Eliton is dead. Senator Eliton is–I failed–I have–”
“Bogard, stop. Back up. What happened just before you lost Senator Elit
on?”
“I receive a mission parameter amendation.”
“From who? The RI?”
“The Resident Intelligence, yes.”
“What is the nature of the amendation?”
“Respond to verbal command, reset identification specifications. After that, the communications link goes down. We lose all contact with the RI.”
“What is the verbal command?”
“Zed-slash-repatch-one, reestablish, local parameter, verbal command ‘I am not here. Protect Ambassador Humadros.’ Omega-five catalogue reset. Responding.”
Derec exchanged a startled look with Rana. That was the command code to override Bogard’s preset priority, the command used by Mia Daventri to save the robot at Union Station.
“Who gave that command?” Derec asked.
“I do not know.”
“Was it a human?”
“Yes.”
Derec felt a chill. “Did it originate from within your enshielding?”
“Yes.”
“Do you know who gave the command?” Derec asked again.
“No one.”
“Someone had to. Bogard, reset parameters. Follow the logic. You perceived a threat?”
“Yes.”
“You enshielded Senator Eliton.”
“Yes.”
“You received an amendation from the RI.”
“Yes.”
“The command to reassign your primary concern came from within your enshielding.”
“Yes.”
“Who was the last human within your enshielding?”
“Senator Eliton.”
“Conclusion?”
“Senator Eliton gave the command.” There was a long pause. Then: “But he was no longer there. I lost him. I could not perceive him. The RI had a positive track on him and he disappeared. He could not have been there to give the command.”
“Bogard, were you using the RI’s telemetry the whole time?”
“Yes, as an augmentation to my own, until the link went down.”
“You were relying on the RI for identification and location?”
“Yes.”
“Who instructed you to do that?”
“Standard procedure within Union Station. I was told to conform to the required protocol.”
