by Greg Egan
He decided to have the creature put down in the morning; he didn’t want it corrupting its clone-brothers, and he couldn’t be bothered arranging to have it kept in isolation. Extras had their sex drives substantially lowered by drugs, but not completely eliminated―that would have had too many physiological side-effects―and Gray had heard that it took just one clone who had discovered the possibilities, to trigger widespread masturbation and homosexual behaviour throughout the batch. Most owners would not have cared, but Gray wanted his Extras to be more than merely healthy; he wanted them to be innocent, he wanted them to be without sin. He was not a religious man, but he could still appreciate the emotional power of such concepts. When the time came for his brain to be moved into a younger body, he wanted to begin his new life with a sense of purification, a sense of rebirth.
However sophisticated his amorality, Gray freely admitted that at a certain level, inaccessible to reason, his indulgent life sickened him, as surely as it sickened his body. His family and his peers had always, unequivocally, encouraged him to seek pleasure, but perhaps he had been influenced―subconsciously and unwillingly―by ideas which still prevailed in other social strata. Since the late twentieth century, when―in affluent countries―cardiovascular disease and other “diseases of lifestyle” had become the major causes of death, the notion that health was a reward for virtue had acquired a level of acceptance unknown since the medieval plagues. A healthy lifestyle was not just pragmatic, it was righteous. A heart attack or a stroke, lung cancer or liver disease―not to mention AIDS―was clearly a punishment for some vice that the sufferer had chosen to pursue. Twenty-first century medicine had gradually weakened many of the causal links between lifestyle and life expectancy―and the advent of Extras would, for the very rich, soon sever them completely―but the outdated moral overtones persisted nonetheless.
In any case, however fervently Gray approved of his gluttonous, sedentary, drug-hazed, promiscuous life, a part of him felt guilty and unclean. He could not wipe out his past, nor did he wish to, but to discard his ravaged body and begin again in blameless flesh would be the perfect way to neutralise this irrational self-disgust. He would attend his own cremation, and watch his “sinful” corpse consigned to “hellfire”! Atheists, he decided, are not immune to religious metaphors; he had no doubt that the experience would be powerfully moving, liberating beyond belief.
Three months later, Sarah Brash’s lawyers informed him that she had conceived a child (which, naturally, she’d had transferred to an Extra surrogate), and that she cordially requested that Gray provide her with fifteen billion dollars to assist with the child’s upbringing.
His first reaction was a mixture of irritation and amusement at his own naivety. He should have suspected that there’d been more to Sarah’s request than sheer perversity. Her wealth was comparable to his own, but the prospect of living for centuries seemed to have made the rich greedier than ever; a fortune that sufficed for seven or eight decades was no longer enough.
On principle, Gray instructed his lawyers to take the matter to court―and then he began trying to ascertain what his chances were of winning. He’d had a vasectomy years ago, and could produce records proving his infertility, at least on every occasion he’d had a sperm count measured. He couldn’t prove that he hadn’t had the operation temporarily reversed, since that could now be done with hardly a trace, but he knew perfectly well that the Extra was the father of the child, and he could prove that. Although the Extras’ brain damage resulted solely from foetal microsurgery, rather than genetic alteration, all Extras were genetically tagged with a coded serial number, written into portions of DNA which had no active function, at over a thousand different sites. What’s more, these tags were always on both chromosomes of each pair, so any child fathered by an Extra would necessarily inherit all of them. Gray’s biotechnology advisers assured him that stripping these tags from the zygote was, in practice, virtually impossible.
Perhaps Sarah planned to freely admit that the Extra was the father, and hoped to set a precedent making its owner responsible for the upkeep of its human offspring. Gray’s legal experts were substantially less reassuring than his geneticists. Gray could prove that the Extra hadn’t raped her―as she no doubt knew, he’d taped everything that had happened that night―but that wasn’t the point; after all, consenting to intercourse would not have deprived her of the right to an ordinary paternity suit. As the tapes also showed, Gray had known full well what was happening, and had clearly approved. That the late Extra had been unwilling was, unfortunately, irrelevant.
After wasting an entire week brooding over the matter, Gray finally gave up worrying. The case would not reach court for five or six years, and was unlikely to be resolved in less than a decade. He promptly had his remaining Extras vasectomised―to prove to the courts, when the time came, that he was not irresponsible―and then he pushed the whole business out of his mind.
Almost.
A few weeks later, he had a dream. Conscious all the while that he was dreaming, he saw the night’s events re-enacted, except that this time it was he who was bound and muzzled, slave to Sarah’s hands and tongue, while the Extra stood back and watched.
But … had they merely swapped places, he wondered, or had they swapped bodies? His dreamer’s point of view told him nothing―he saw all three bodies from the outside―but the lean young man who watched bore Gray’s own characteristic jaded expression, and the middle-aged man in Sarah’s embrace moaned and twitched and shuddered, exactly as the Extra had done.
Gray was elated. He still knew that he was only dreaming, but he couldn’t suppress his delight at the inspired idea of keeping his old body alive with the Extra’s brain, rather than consigning it to flames. What could be more controversial, more outrageous, than having not just his Extras, but his own discarded corpse, walking the grounds of his estate? He resolved at once to do this, to abandon his long-held desire for a symbolic cremation. His friends would be shocked into the purest admiration―as would the fanatics, in their own way. True infamy had proved elusive; people had talked about his last stunt for a week or two, and then forgotten it―but the midsummer party at which the guest of honour was Daniel Gray’s old body would be remembered for the rest of his vastly prolonged life.
Over the next few years, the medical research division of Gray’s vast corporate empire began to make significant progress on the brain transplant problem.
Transplants between newborn Extras had been successful for decades. With identical genes, and having just emerged from the very same womb (or from the anatomically and biochemically indistinguishable wombs of two clone-sister Extras), any differences between donor and recipient were small enough to be overcome by a young, flexible brain.
However, older Extras―even those raised identically―had shown remarkable divergences in many neural structures, and whole-brain transplants between them had been found to result in paralysis, sensory dysfunction, and sometimes even death. Gray was no neuroscientist, but he could understand roughly what the problem was: Brain and body grow and change together throughout life, becoming increasingly reliant on each other’s idiosyncrasies, in a feed-back process riddled with chaotic attractors―hence the unavoidable differences, even between clones. In the body of a human (or an Extra), there are thousands of sophisticated control systems which may include the brain, but are certainly not contained within it, involving everything from the spinal cord and the peripheral nervous system, to hormonal feedback loops, the immune system, and, ultimately, almost every organ in the body. Over time, all of these elements adapt in some degree to the particular demands placed upon them―and the brain grows to rely upon the specific characteristics that these external systems acquire. A brain transplant throws this complex interdependence into disarray―at least as badly as a massive stroke, or an extreme somatic trauma.
Sometimes, two or three years of extensive physiotherapy could enable the transplanted brain and body to adjust to each other―but
only between clones of equal age and indistinguishable lifestyles. When the brain donor was a model of a likely human candidate―an intentionally overfed, under-exercised, drug-wrecked Extra, twenty or thirty years older than the body donor―the result was always death or coma.
The theoretical solution, if not the detailed means of achieving it, was obvious. Those portions of the brain responsible for motor control, the endocrine system, the low-level processing of sensory data, and so on, had to be retained in the body in which they had matured. Why struggle to make the donor brain adjust to the specifics of a new body, when that body’s original brain already contained neural systems fine-tuned to perfection for the task? If the aim was to transplant memory and personality, why transplant anything else?
After many years of careful brain-function mapping, and the identification and synthesis of growth factors which could trigger mature neurons into sending forth axons across the boundaries of a graft, Gray’s own team had been the first to try partial transplants. Gray watched tapes of the operations, and was both repelled and amused to see oddly shaped lumps of one Extra’s brain being exchanged with the corresponding regions of another’s; repelled by visceral instinct, but amused to see the seat of reason―even in a mere Extra―being treated like so much vegetable matter.
The forty-seventh partial transplant, between a sedentary, ailing fifty-year-old, and a fit, healthy twenty-year-old, was an unqualified success. After a mere two months of recuperation, both Extras were fully mobile, with all five senses completely unimpaired.
Had they swapped memories and “personalities”? Apparently, yes. Both had been observed by a team of psychologists for a year before the operation, and their behaviour extensively characterised, and both had been trained to perform different sets of tasks for rewards. After the selective brain swap, the learned tasks, and the observed behavioural idiosyncrasies, were found to have followed the transplanted tissue. Of course, eventually the younger, fitter Extra began to be affected by its newfound health, becoming substantially more active than it had been in its original body―and the Extra now in the older body soon showed signs of acquiescing to its ill-health. But regardless of any post-transplant adaption to their new bodies, the fact remained that the Extras’ identities―such as they were―had been exchanged.
After a few dozen more Extra-Extra transplants, with virtually identical outcomes, the time came for the first human-Extra trials.
Gray’s parents had both died years before (on the operating table―an almost inevitable outcome of their hundreds of non-essential transplants), but they had left him a valuable legacy; thirty years ago, their own scientists had (illegally) signed up fifty men and women in their early twenties, and Extras had been made for them. These volunteers had been well paid, but not so well paid that a far larger sum, withheld until after the actual transplant, would lose its appeal. Nobody had been coerced, and the seventeen who’d dropped out quietly had not been punished. An eighteenth had tried blackmail―even though she’d had no idea who was doing the experiment, let alone who was financing it―and had died in a tragic ferry disaster, along with three hundred and nine other people. Gray’s people believed in assassinations with a low signal-to-noise ratio.
Of the thirty-two human-Extra transplants, twenty-nine were pronounced completely successful. As with the Extra-Extra trials, both bodies were soon fully functional, but now the humans in the younger bodies could―after a month or two of speech therapy―respond to detailed interrogation by experts, who declared that their memories and personalities were intact.
Gray wanted to speak to the volunteers in person, but knew that was too risky, so he contented himself with watching tapes of the interviews. The psychologists had their barrages of supposedly rigourous tests, but Gray preferred to listen to the less formal segments, when the volunteers spoke of their life histories, their political and religious beliefs, and so on―displaying at least as much consistency across the transplant as any person who is asked to discuss such matters on two separate occasions.
The three failures were difficult to characterise. They too learnt to use their new bodies, to walk and talk as proficiently as the others, but they were depressed, withdrawn, and uncooperative. No physical difference could be found―scans showed that their grafted tissue, and the residual portions of their Extra’s brain, had forged just as many interconnecting pathways as the brains of the other volunteers. They seemed to be unhappy with a perfectly successful result―they seemed to have simply decided that they didn’t want younger bodies, after all.
Gray was unconcerned; if these people were disposed to be ungrateful for their good fortune, that was a character defect that he knew he did not share. He would be utterly delighted to have a fresh young body to enjoy for a while―before setting out to wreck it, in the knowledge that, in a decade’s time, he could take his pick from the next batch of Extras and start the whole process again.
There were “failures” amongst the Extras as well, but that was hardly surprising―the creatures had no way of even beginning to comprehend what had happened to them. Symptoms ranged from loss of appetite to extreme, uncontrollable violence; one Extra had even managed to batter itself to death on a concrete floor, before it could be tranquillised. Gray hoped his own Extra would turn out to be well-behaved―he wanted his old body to be clearly sub-human, but not utterly berserk―but it was not a critical factor, and he decided against diverting resources towards the problem. After all, it was the fate of his brain in the Extra’s body that was absolutely crucial; success with the other half of the swap would be an entertaining bonus, but if it wasn’t achieved, well, he could always revert to cremation.
Gray scheduled and cancelled his transplant a dozen times. He was not in urgent need by any means―there was nothing currently wrong with him that required a single new organ, let alone an entire new body―but he desperately wanted to be first. The penniless volunteers didn’t count―and that was why he hesitated: trials on humans from those lower social classes struck him as not much more reassuring than trials on Extras. Who was to say that a process that left a rough-hewn, culturally deficient personality intact, would preserve his own refined, complex sensibilities? Therein lay the dilemma: he would only feel safe if he knew that an equal―a rival―had undergone a transplant before him, in which case he would be deprived of all the glory of being a path-breaker. Vanity fought cowardice; it was a battle of titans.
It was the approach of Sarah Brash’s court case that finally pushed him into making a decision. He didn’t much care how the case itself went; the real battle would be for the best publicity; the media would determine who won and who lost, whatever the jury decided. As things stood, he looked like a naive fool, an easily manipulated voyeur, while Sarah came across as a smart operator. She’d shown initiative; he’d just let himself (or rather, his Extra) get screwed. He needed an edge, he needed a gimmick―something that would overshadow her petty scheming. If he swapped bodies with an Extra in time for the trial―becoming, officially, the first human to do so―nobody would waste time covering the obscure details of Sarah’s side of the case. His mere presence in court would be a matter of planet-wide controversy; the legal definition of identity was still based on DNA fingerprinting and retinal patterns, with some clumsy exceptions thrown in to allow for gene therapy and retina transplants. The laws would soon be changed―he was arranging it―but as things stood, the subpoena would apply to his old body. He could just imagine sitting in the public gallery, unrecognised, while Sarah’s lawyer tried to cross-examine the quivering, confused, wild-eyed Extra that his discarded “corpse” had become! Quite possibly he, or his lawyers, would end up being charged with contempt of court, but it would be worth it for the spectacle.
So, Gray inspected Batch D, which were now just over nineteen years old. They regarded him with their usual idiotic, friendly expression. He wondered, not for the first time, if any of the Extras ever realised that he was their clone-brother, too. They never seemed to r
espond to him any differently than they did to other humans―and yet a fraction of a gram of foetal brain tissue was all that had kept him from being one of them. Even Batch A, his “contemporaries”, showed no sign of recognition. If he had stripped naked and mimicked their grunting sounds, would they have accepted him as an equal? He’d never felt inclined to find out; Extra “anthropology” was hardly something he wished to encourage, let alone participate in. But he decided he would return to visit Batch D in his new body; it would certainly be amusing to see just what they made of a clone-brother who vanished, then came back three months later with speech and clothes.
The clones were all in perfect health, and virtually indistinguishable. He finally chose one at random. The trainer examined the tattoo on the sole of its foot, and said, “D12, sir.”
Gray nodded, and walked away.
He spent the week before the transplant in a state of constant agitation. He knew exactly which drugs would have prevented this, but the medical team had advised him to stay clean, and he was too afraid to disobey them.
He watched D12 for hours, trying to distract himself with the supposedly thrilling knowledge that those clear eyes, that smooth skin, those taut muscles, would soon be his. The only trouble was, this began to seem a rather paltry reward for the risk he would be taking. Knowing all his life that this day would come, he’d learnt not to care at all what he looked like; by now, he was so used to his own appearance that he wasn’t sure he especially wanted to be lean and muscular and rosy-cheeked. After all, if that really had been his fondest wish, he could have achieved it in other ways; some quite effective pharmaceuticals and tailored viruses had existed for decades, but he had chosen not to use them. He had enjoyed looking the part of the dissolute billionaire, and his wealth had brought him more sexual partners than his new body would ever attract through its own merits. In short, he neither wanted nor needed to change his appearance at all.