When the time came, the couple asked their families for leave to form a companionship-marriage, which was granted. They went to the Autarch for permission to have children. To their delight, it turned out their genetic make-ups, as mapped in the Druids’ capacious memories, were compatible enough to allow this too.

But even so the Druids forbade the union.

Hilin, horrified, learned that this was because of the results of his latest Druidic assessment, a test of his general intelligence and potential. He had failed, not by posting too low a score, but too high.

Rusel, brooding, understood. The eugenic elimination of weaknesses had in general been applied wisely. But under the Autarch-Druid duopoly, attempts were made to weed out the overbright, the curious - anybody who might prove rebellious. So, if you were bright, you mustn’t be allowed to breed. Rusel would have stamped out this practice, had he even noticed it. If this went on, the transient population would become passive, listless, easily manipulated by the Autarchs and the Druids, but useless for the mission’s larger purposes.

It was too late for Hilin. He was banned from ever seeing his Sale again. And he was told by the Autarch’s ministers that this was by order of the Elder himself, though Rusel, dreaming his life away, knew nothing about it.

After that Hilin spent long hours in the shrine-like enclosure where Rusel’s Virtuals played out endlessly. He tried to understand. He told himself the Elder’s wisdom surpassed his own; this severance from his lover must be for the best, no matter what pain it caused him. He even tried to draw comfort from what he saw as parallels between his own doomed romance and Rusel and his lost Lora. But understanding didn’t come, and his bewilderment and pain soon blossomed to resentment - and anger.

In his despair, he tried to destroy the shrine of the Elder.

As punishment, the Autarch locked him in a cell for two days. Hilin emerged from his confinement outwardly subdued, inwardly ready to explode.

Rusel would later castigate himself for failing to see the dangers in the situation. But it was so hard to see anything at all now.

His central nervous system was slowly deteriorating, so the Couch informed him. He could still move his arms and legs - he could still walk, even, with a frame - but he felt no sensation in his feet, nothing but the faintest ache in his fingertips. As pain and pleasure alike receded, he felt he was coming loose from the world. When he surfaced into lucidity he was often shocked to find a year had passed like a day, as if his sense of time was becoming logarithmic.