The 3D printer is cranking up. It hisses slightly, dissipating heat from the hard vacuum chamber in its supercooled workspace. Deep in its guts it creates coherent atom beams, from a bunch of Bose—Einstein condensates hovering on the edge of absolute zero. By superimposing interference patterns on them, it generates an atomic hologram, building a perfect replica of some original artifact, right down to the atomic level – there are no clunky moving nanotechnology parts to break or overheat or mutate. Something is going to come out of the printer in half an hour, something cloned off its original right down to the individual quantum states of its component atomic nuclei. The cat, seemingly oblivious, shuffles closer to the warm air exhaust ducts.

"Bob Franklin, he died about two, three years before you were born – your dad did business with him. So did your mom. Anyway, he had chunks of his noumen preserved and the estate trustees are trying to re-create his consciousness by cross-loading him in their implants. They're sort of a borganism, but with money and style. Anyway, Bob got into the space biz back then, with some financial wizardry a friend of your father whipped up for him, and now they're building a spacehab that they're going to take all the way out to Jupiter, where they can dismantle a couple of small moons and begin building helium-three refineries. It's that CETI scam I told you about earlier, but they've got a whole load of other angles on it for the long term. See, your dad's friends have cracked the broadcast, the one everybody knows about. It's a bunch of instructions for finding the nearest router that plugs into the galactic Internet. And they want to go out there and talk to some aliens."

This is mostly going right over Amber's head – she'll have to learn what helium-three refineries are later – but the idea of running away to space has a certain appeal. Adventure, that's what. Amber looks around the living room and sees it for a moment as a capsule, a small wooden cell locked deep in a vision of a middle America that never was – the one her mom wants to bring her up in, like a misshapen Skinner box designed to train her to be normal. "Is Jupiter fun?" she asks. "I know it's big and not very dense, but is it, like, a happening place? Are there any aliens there?"

"It's the first place you need to go if you want to get to meet the aliens eventually," says the cat as the printer clanks and disgorges a fake passport (convincingly aged), an intricate metal seal engraved with Arabic script, and a tailored wide-spectrum vaccine targeted on Amber's immature immune system. "Stick that on your wrist, sign the three top copies, put them in the envelope, and let's get going. We've got a flight to catch, slave."

Sadeq is eating his dinner when the first lawsuit in Jupiter orbit rolls in.

Alone in the cramped humming void of his station, he considers the plea. The language is awkward, showing all the hallmarks of a crude machine translation: The supplicant is American, a woman, and – oddly – claims to be a Christian. This is surprising enough, but the nature of her claim is, at face value, preposterous. He forces himself to finish his bread, then bag the waste and clean the platter, before he gives it his full consideration. Is it a tasteless joke? Evidently not. As the only quadi outside the orbit of Mars, he is uniquely qualified to hear it, and it is a case that cries out for justice.

A woman who leads a God-fearing life – not a correct one, no, but she shows some signs of humility and progress toward a deeper understanding – is deprived of her child by the machinations of a feckless husband who deserted her years before. That the woman was raising the child alone strikes Sadeq as disturbingly Western, but pardonable when he reads her account of the feckless one's behavior, which is pretty lax; an ill fate indeed would await any child that this man raises to adulthood. This man deprives her of her child, but not by legitimate means: He doesn't take the child into his own household or make any attempt to raise her, either in accordance with his own customs or the precepts of shari'a. Instead, he enslaves her wickedly in the mire of the Western legal tradition, then casts her into outer darkness to be used as a laborer by the dubious forces of self-proclaimed "progress". The same forces Sadeq has been sent to confront, as representative of the umma in orbit around Jupiter.

Sadeq scratches his short beard thoughtfully. A nasty tale, but what can he do about it? "Computer," he says, "a reply to this supplicant: My sympathies lie with you in the manner of your suffering, but I fail to see in what way I can be of assistance. Your heart cries out for help before God (blessed be his name), but surely this is a matter for the temporal authorities of the dar al-Harb." He pauses: Or is it ? he wonders. Legal wheels begin to turn in his mind. "If you can but find your way to extending to me a path by which I can assert the primacy of shari'a over your daughter, I shall apply myself to constructing a case for her emancipation, to the greater glory of God (blessed be his name). Ends, sigblock, send."

Releasing the Velcro straps that hold him at the table, Sadeq floats up and kicks gently toward the forward end of the cramped habitat. The controls of the telescope are positioned between the ultrasonic clothing cleaner and the lithium hydroxide scrubbers. They're already freed up, because he was conducting a wide-field survey of the inner ring, looking for the signature of water ice. It is the work of a few moments to pipe the navigation and tracking system into the telescope's controller and direct it to hunt for the big foreign ship of fools. Something nudges at Sadeq's mind urgently, an irritating realization that he may have missed something in the woman's e-mail: there were a number of huge attachments. With half his mind he surfs the news digest his scholarly peers send him daily. Meanwhile, he waits patiently for the telescope to find the speck of light that the poor woman's daughter is enslaved within.

This might be a way in, he realizes, a way to enter dialogue with them. Let the hard questions answer themselves, elegantly. There will be no need for confrontation if they can be convinced that their plans are faulty: no need to defend the godly from the latter-day Tower of Babel these people propose to build. If this woman Pamela means what she says, Sadeq need not end his days out here in the cold between the worlds, away from his elderly parents and brother, and his colleagues and friends. And he will be profoundly grateful, because in his heart of hearts, he knows that he is less a warrior than a scholar.

"I'm sorry, but the borg is attempting to assimilate a lawsuit," says the receptionist. "Will you hold?"

"Crud." Amber blinks the Binary Betty answerphone sprite out of her eye and glances round at the cabin. "That is so last century," she grumbles. "Who do they think they are?"

"Dr. Robert H. Franklin," volunteers the cat. "It's a losing proposition if you ask me. Bob was so fond of his dope there's this whole hippy group mind that's grown up using his state vector as a bong —"

"Shut the fuck up!" Amber shouts at him. Instantly contrite (for yelling in an inflatable spacecraft is a major faux pas): "Sorry." She spawns an autonomic thread with full parasympathetic nervous control, tells it to calm her down, then spawns a couple more to go forth and become fuqaha, expert on shari'a law. She realizes she's buying up way too much of the orphanage's scarce bandwidth – time that will have to be paid for in chores, later – but it's necessary. "Mom's gone too far. This time it's war."

She slams out of her cabin and spins right round in the central axis of the hab, a rogue missile pinging for a target to vent her rage on. A tantrum would be good —