Cassandra gave a girlish little shrug, accompanied by a half-pout. “I thought debate was supposed to be healthy,” she countered.

“It is,” Auger replied, “so long as you don’t disagree with me.”

Tanglewood wrapped the Earth in light, like a glimmering funeral wreath. The dropship moved cautiously, veering this way and that as it navigated between moving threads, each of which was an enormous chain of interconnected habitats. In every direction there were more and more loops, threads and knots of light receding into a faint, luminous scribble of headache-inducing complexity, each centre of mass following its own private orbit around Earth.

Hundreds of thousands of habitats, each a small city in its own right; hundreds of millions of people, Auger knew, all with lives as complex and problematic and hope-filled as her own. Traffic was constantly coming and going from different parts of Tanglewood, sparks of light slipping from one thread to another in all directions. The concatenated threads of linked habitats were in a constant process of severance and reunion, like DNA strands in some thriving Petri dish.

Her mood brightened when she felt the dropship braking for its final approach. Immediately ahead, strung together hub to hub, were the six counter-rotating wheels of the Antiquities Board. Already, she was certain, the news of her discovery would be filtering through the usual academic channels, and the pressure would soon be mounting for her to publish a preliminary summary of the newspaper’s contents. She would be very lucky if she got any sleep in the next twenty-four hours. It would, however, be the kind of work she enjoyed—tiring but simultaneously exhilarating, leaving her in a state of exhausted euphoria at the end of it. And that would only be the beginning of the much longer process of detailed study, when she would see whether her initial hunches and guesses stood the test of time.