Blue Remembered Earth

she would have shaken her head at his lack of boldness.

He voked the command.

The lack of any obvious change was disheartening. Matilda’s brain activity was varying by the second, but it had been doing so from the moment he activated the link. All he was seeing was the natural background noise caused by constant random stimuli, as the other elephants moved and vocalised, and more remote sights, sounds and smells came to her attention. His own mind was subject to the same continuously firing patterns, but it wasn’t putting out a strong enough signal to evoke a measurable response in Matilda’s scan. He was merely adding noise to noise.

Matilda saw better than he did, so most of the activity in his visual centre was bleed-over from her. Fleeting impressions, like the hypnogogic imagery preceding sleep, flitted across the projection screen of his mind. As with smell, the translation was too imprecise to result in anything immediately recognisable, although he kept getting the impression of bulky, rounded forms – chopped up, reshuffled and disturbingly amorphous, like a cubist’s idea of elephants.

Geoffrey closed his eyes, blocking what little extraneous input was now reaching them. He concentrated on a particular mental puzzle: holding an Escher figure in his mind, the Meta Presence triangle, and then rotating it, all the while trying to keep the details in sharp focus. It required an intense conscious effort, and because the exercise drew on his mind’s visual machinery, it elicited a response in the neural map of his own brain, still hanging there in the upper-left corner of his visual field. His visual cortex was glowing, as bloodflow and neurochemical markers signalled a concentration of resources.

It required an even greater effort to hold the Escher figure in mind and also track the neural changes in the side-by-side scans, but he had trained for that, over and over, until he was capable of making the rapid attentional shifts that allowed him to both perform the concentration exercises and monitor their effects.

Now it was paying off: Matilda’s visual cortex was beginning to light up as well, in response to his own. He had no idea what that felt like to her, but she couldn’t be experiencing that level of stimulus without feeling something. For a moment, he too felt the rising potential as the visual response he was generating in her began to spill back into his head. It died down just as quickly, though: he had installed dampening protocols to guard against that kind of positive feedback.

He stopped holding the Escher figure in his head and opened his eyelids again. Their minds had returned to quiescence, with no exceptional activity in either visual cortex.

Geoffrey didn’t doubt that the link had worked as intended, and that the observed response would be repeatable. He’d done nothing that broke the laws of physics, just wired two minds together in a particular way. It would have been strange if it hadn’t worked.

Time to try something else.

Geoffrey did not care for scorpions. He had trodden on one as a child – it had found its way into his shoe one night – and the memory of that lancing, electric pain as the venom touched his nervous system was no less sharp the better part of thirty years later. He had learned to overcome his fear – it would have been difficult to function otherwise, when there were so many other things that could sting and injure – but that childhood incident had imprinted a deep-seated phobia that would be with him for the rest of his life. He’d had occasion to curse that fear, but at last it was going to do something for him instead.

Merely thinking about the scorpion was enough to bring on unpleasant feelings, but now he forced himself not just to return to the incident, but to imagine it in as much fetishistic detail as he could. He’d been old enough to understand that he ought to check for scorpions, old enough to grasp that it would be very bad to be stung, but at the age of five, he hadn’t acquired the tedious adult discipline of checking every time. Still, when his foot contacted the scorpion, and the sting sank in, there had been a moment of delicious clarity, a calm hiatus in which he understood precisely what had happened, precisely what was about to happen, and that there was nothing in the universe that could stop it. It had come like a wind-whipped fire, spreading up his leg, through the branching intricacy of his nervous system – his first real understanding that he even had a nervous system.

But there it was, traced out in writhing, luminous glory, like a ship’s rigging wreathed in St Elmo’s fire. In that moment he could have drawn an anatomical map of himself.

It was a memory he had tried his best not to return to, but perhaps because of that it remained raw, the edges still sharp, the colours and sensations bright. He felt his chest tighten, his heart rate increase, sweat prickle his back. In the neural scan of his brain, he saw the fear response light up.

Matilda was feeling it now as well. In response she issued a threat rumble, and Geoffrey took a step back as he sensed her growing agitation. His eyes were wide open now. He let go of the memory, forced it back into the mental box where he had kept it all these years. Enough for now; he’d gone sufficiently far to prove his point. It was unfortunate that the first demonstration of that had involved fear, but he’d needed something capable of producing an unambiguous signal. Matilda’s neural pattern was settling down now; he hoped that she would not be troubled by what had happened.

He was about to suspend the link when, without warning, Eunice appeared. She was standing to his right, watching proceedings with her hands behind her back.

Geoffrey was about to admonish the figment – she had as good as promised not to appear without his direct invocation – when it occurred to him that, since Matilda was sharing his sensorium, she should also be aware of Eunice.

He voked to suspend the link, but the damage had been done. Matilda had seen something there, something entirely novel, something she had never encountered before in her life. The figment would have been disturbing enough in its own right, popping into existence like that – elephants moved through a world of solid persistence, of dusty ground, rocks and weather-shaped trees – but the figment would also have been made visible, ghostly and translucent, by virtue of the five-per-cent threshold. Elephants didn’t have to believe in ghosts to find an apparition profoundly upsetting.

Matilda certainly didn’t like it. He had primed her by stimulating the fear response, but he doubted she would have taken the figment well under any circumstances. She alternated trumpeting with threat rumbles and began backing away from the spot where the figment had appeared. Geoffrey might have broken the link, but Matilda wasn’t going to let it slip that easily.

‘You stupid fool!’ he shouted. ‘I told you not to show up like that.’

‘What’s wrong with them? Why are they behaving like that?’

‘Because she was in my head when you appeared. She saw you, Eunice. And she doesn’t know how to deal with it.’