So how could she leave Javeed to grasp at the same kind of shadows if there was any chance at all of replacing them with something more solid? She’d told Martin that what he’d asked for was impossible – but was that literally true? It would certainly be far more difficult than he’d imagined, but that was not the same thing at all.
She climbed out of bed; the room light came on slowly to avoid dazzling her as she crossed to her desk. It took her half an hour to cobble together a rough map of the brain regions that Martin’s Proxy would need personalised in order to meet his goals. She had estimates of varying quality for the total amount of data required to differentiate each region in an individual from the crude average that Blank Frank represented.
That was a start, but there were still a lot of unknowns. The rate at which the best scanning techniques pulled useful, distinguishing data out of a subject’s skull varied enormously, depending on how well the activity they were performing had been tailored for the region being mapped. It also tended to follow a law of diminishing returns: the better the Proxy became at mimicking the subject, the harder it became to home in on the remaining differences. But she could take the average rate she’d measured for the Faribas as a reasonable first approximation. Martin didn’t know how long he had to live, but what if she assumed that he could manage, say, three hour-long sessions a week for a year?
Nasim re-checked her calculations twice, but she hadn’t made a mistake. What he’d asked of her was not necessarily impossible. That was a long way from knowing that it could actually be done, but purely in terms of the information flows required it would not be like shifting an ocean with an eyedropper. Merely Lake Erie with a teaspoon.
It was afternoon on the US East Coast; Caplan kept strange hours, but he was usually awake by now. She emailed him: ‘Can you spare a few minutes to talk?’
The reply came back within seconds. ‘Sure.’
Caplan preferred to meet in augmented reality, but Nasim wasn’t set up for that at home, so they settled for plain audio. She lay on her bed with her notepad beside her and did her best to explain Martin’s plight succinctly; she knew Caplan wouldn’t have much patience for the details.
As it was, he interrupted her halfway through. ‘Why doesn’t your friend just freeze himself? All cancers will be treatable in a decade.’
Cancers, maybe; Nasim doubted that being frozen to death would be cured so quickly. ‘He has a son,’ she said. ‘That’s the whole point. He wants to raise his own son, not come back when Javeed’s an adult.’
‘Well, he can’t freeze the kid,’ Caplan mused. ‘That would be illegal. Unless Iran has much more progressive legislation on these things than we have.’
Nasim struggled to reorganise her tactics. How did you get through to someone whose entire world view had been moulded by tenth-rate science fiction? Empathy for Javeed was out; Caplan probably believed that the only consequence of being orphaned at six was that you tried harder than anyone else to reach the top of your class in space academy.
She said, ‘Why did you buy Eikonometrics?’
Caplan didn’t reply, so she answered for him. ‘To find out how far side-loading can go. You want to know if it can ever be a substitute for uploading: if you’ll ever be able to reproduce the entire functionality of your brain without slicing it up and feeding it through an electron microscope.’
Caplan said, ‘That’s not the only question that makes side-loading interesting. But please go on, if you have a point to make.’
‘This is a chance to find out more about the limits of the technique, ’ Nasim said. ‘You’ll have a highly motivated volunteer, and a project that will force us to push the envelope.’
‘Motivated volunteers aren’t hard to find,’ Caplan replied.
‘Maybe not,’ Nasim conceded. ‘But the people who’d take the bait if you sprinkled some buzzwords around the net are your fellow wannabe-immortals, who’ll expect perfect copies of their minds to wake up in cyberspace. Martin has no such illusions; he understands that the Proxy will have massive limitations. He doesn’t imagine that we can make him live forever; he just wants us to use his brain to craft some software that can do a certain job.’
‘So when exactly did I become the Make-a-Wish Foundation?’ Caplan protested irritably.
‘This isn’t charity,’ Nasim insisted. ‘It would yield valuable information for both of us.’ She was sure Caplan could see that; he was probably just annoyed that she was trying to set the agenda.
He said, ‘What would you tell your own staff, your own management?’
‘That it’s research that could lead to even better Proxies,’ Nasim replied. ‘Which is perfectly true. If this works, Martin benefits, Zendegi benefits, you benefit. If it doesn’t, we’ll probably still learn a great deal just from seeing exactly where things fail. So what’s the downside?’
She waited, wondering if Caplan was going to make her swear not to turn Martin’s Proxy into a transcendent being who would rob him of his rightful place as lord of the solar system.
He said, ‘If it doesn’t work, are you prepared to clean up the mess? To put your botched creation out of its misery?’
Nasim was about to reply scornfully that the Proxy would be immune to any such need, but she caught herself. That was certainly the result she’d be aiming for: a devoted parent who lived in the moment, committed to his son’s wellbeing, but no more capable of contemplating – or regretting – his own nature than Virtual Azimi or the chatty Faribas.
A failure, though, could miss that target in many different directions.
Nasim steeled herself. She said, ‘I’ll spell out all the risks to Martin; in the end he’s the one who’ll have to decide the fate of anything derived from his own mind. But yes, if it comes down to it, I’m prepared to clean up the mess.’
19
Martin had begun shaving his head three weeks before it was necessary, to give Javeed time to grow used to his altered appearance before he was confronted with the more significant change: the change in their routine. He’d been expecting a tantrum when he broke the news, so he chose the time and place carefully: at home, the day before their next visit to Zendegi, having just made their choices on the website.
‘But I want to go to the shop!’ Javeed screamed.
‘Sssh. We’ll still go to the shop, straight afterwards. You can still talk to Uncle Omar and Farshid.’
‘But that’s stupid!’
It was a fair complaint. If they were going to Omar’s shop anyway, why not use the ghal’eha there?
‘Aunty Nasim has a special kind of ghal’e that’s easier for me to use, easier on my back. So she very kindly said that we could use that.’
‘I hate her!’ Javeed proclaimed.
‘No, you don’t,’ Martin said flatly. ‘You hardly know her. Anyway, you don’t even have to talk to her. We’ll go there, we’ll use the ghal’eha, then we’ll go to the shop. Okay?’
‘No! I want to do it the proper way!’ Javeed’s face contorted in anguish.
‘Well, you have a choice: we can go to Aunty Nasim for Zendegi, then visit Uncle Omar in the shop, or we can just stay home and you can play for an hour on your console instead.’
Javeed’s face became a shade redder. ‘That’s not fair!’
‘That’s the choice. Now do you want to help me cook dinner?’