"Sapient network packet?" asks Alan.

"Nope." Manfred shakes his head, grins. "Should have known you'd read Vinge … or was it the movie? No, what I think is that there's only one logical thing to beam backward and forward out there, and you may remember I asked you to beam it out about, oh, nine years ago?"

"The lobsters." Alan's eyes go blank. "Nine years. Time to Proxima Centauri and back?"

"About that distance, yes," says Manfred. "And remember, that's an upper bound – it could well have come from somewhere closer. Anyway, the first SETI signal came from a couple of degrees off and more than hundred light-years out, but the second signal came from less than three light-years away. You can see why they didn't publicize that – they didn't want a panic. And no, the signal isn't a simple echo of the canned crusty transmission – I think it's an exchange embassy, but we haven't cracked it yet. Now do you see why we have to crowbar the civil rights issue open again? We need a framework for rights that can encompass nonhumans, and we need it as fast as possible. Otherwise, if the neighbors come visiting…"

"Okay," says Alan, "I'll have to talk with myselves. Maybe we can agree something, as long as it's clear that it's a provisional stab at the framework and not a permanent solution?"

Annette snorts. "No solution is final!" Monica catches her eyes and winks: Annette is startled by the blatant display of dissent within the syncitium.

"Well," says Manfred, "I guess that's all we can ask for?" He looks hopeful. "Thanks for the hospitality, but I feel the need to lie down in my own bed for a while. I had to commit a lot to memory while I was off-line, and I want to record it before I forget who I am," he adds pointedly, and Annette breathes a quiet sight of relief.

Later that night, a doorbell rings.

"Who's there?" asks the entryphone.

"Uh, me," says the man on the steps. He looks a little confused. "Ah'm Macx. Ah'm here tae see" – the name is on the tip of his tongue – "someone."

"Come in." A solenoid buzzes; he pushes the door open, and it closes behind him. His metal-shod boots ring on the hard stone floor, and the cool air smells faintly of unburned jet fuel.

"Ah'm Macx," he repeats uncertainly, "or Ah wis fer a wee while, an' it made ma heid hurt. But noo Ah'm me agin, an' Ah wannae be somebody else … can ye help?"

Later still, a cat sits on a window ledge, watching the interior of a darkened room from behind the concealment of curtains. The room is dark to human eyes, but bright to the cat: Moonlight cascades silently off the walls and furniture, the twisted bedding, the two naked humans lying curled together in the middle of the bed.

Both the humans are in their thirties: Her close-cropped hair is beginning to gray, distinguished threads of gunmetal wire threading it, while his brown mop is not yet showing signs of age. To the cat, who watches with a variety of unnatural senses, her head glows in the microwave spectrum with a gentle halo of polarized emissions. The male shows no such aura: he's unnaturally natural for this day and age, although – oddly – he's wearing spectacles in bed, and the frames shine similarly. An invisible soup of radiation connects both humans to items of clothing scattered across the room – clothing that seethes with unsleeping sentience, dribbling over to their suitcases and hand luggage and (though it doesn't enjoy noticing it) the cat's tail, which is itself a rather sensitive antenna.

The two humans have just finished making love: They do this less often than in their first few years, but with more tenderness and expertise – lengths of shocking pink Hello Kitty bondage tape still hang from the bedposts, and a lump of programmable memory plastic sits cooling on the side table. The male is sprawled with his head and upper torso resting in the crook of the female's left arm and shoulder. Shifting visualization to infrared, the cat sees that she is glowing, capillaries dilating to enhance the blood flow around her throat and chest.

"I'm getting old," the male mumbles. "I'm slowing down."

"Not where it counts," the female replies, gently squeezing his right buttock.

"No, I'm sure of it," he says. "The bits of me that still exist in this old head – how many types of processor can you name that are still in use thirty-plus years after they're born?"

"You're thinking about the implants again," she says carefully. The cat remembers this as a sore point; from being a medical procedure to help the blind see and the autistic talk, intrathecal implants have blossomed into a must-have accessory for the now-clade. But the male is reluctant. "It's not as risky as it used to be. If they screw up, there're neural growth cofactors and cheap replacement stem cells. I'm sure one of your sponsors can arrange for extra cover."

"Hush: I'm still thinking about it." He's silent for a while. "I wasn't myself yesterday. I was someone else. Someone too slow to keep up. Puts a new perspective on everything: I've been afraid of losing my biological plasticity, of being trapped in an obsolete chunk of skullware while everything moves on – but how much of me lives outside my own head these days, anyhow?" One of his external threads generates an animated glyph and throws it at her mind's eye; she grins at his obscure humor. "Cross-training from a new interface is going to be hard, though."

"You'll do it," she predicts. "You can always get a discreet prescription for novotrophin-B." A receptor agonist tailored for gerontological wards, it stimulates interest in the new: combined with MDMA, it's a component of the street cocktail called sensawunda. "That should keep you focused for long enough to get comfortable."

"What's life coming to when I can't cope with the pace of change?" he asks the ceiling plaintively.

The cat lashes its tail, irritated by his anthropocentrism.

"You are my futurological storm shield," she says, jokingly, and moves her hand to cup his genitals. Most of her current activities are purely biological, the cat notes: From the irregular sideloads, she's using most of her skullware to run ETItalk@home, one of the distributed cracking engines that is trying to decode the alien grammar of the message that Manfred suspects is eligible for citizenship.

Obeying an urge that it can't articulate, the cat sends out a feeler to the nearest router. The cybeast has Manfred's keys; Manfred trusts Aineko implicitly, which is unwise – his ex-wife tampered with it, after all, never mind all the kittens it absorbed in its youth. Tunneling out into the darkness, the cat stalks the Net alone …

"Just think about the people who can't adapt," he says. His voice sounds obscurely worried.

"I try not to." She shivers. "You are thirty, you are slowing. What about the young? Are they keeping up, themselves?"

"I have a daughter. She's about a hundred and sixty million seconds old. If Pamela would let me message her I could find out …" There are echoes of old pain in his voice.

"Don't go there, Manfred. Please." Despite everything, Manfred hasn't let go: Amber is a ligature that permanently binds him to Pamela's distant orbit.

In the distance, the cat hears the sound of lobster minds singing in the void, a distant feed streaming from their cometary home as it drifts silently out through the asteroid belt, en route to a chilly encounter beyond Neptune. The lobsters sing of alienation and obsolescence, of intelligence too slow and tenuous to support the vicious pace of change that has sandblasted the human world until all the edges people cling to are jagged and brittle.

Beyond the distant lobsters, the cat pings an anonymous distributed network server – peer-to-peer file storage spread holographically across a million hosts, unerasable, full of secrets and lies that nobody can afford to suppress. Rants, music, rip-offs of the latest Bollywood hits: The cat spiders past them all, looking for the final sample. Grabbing it – a momentary breakup in Manfred's spectacles the only symptom for either human to notice – the cat drags its prey home, sucks it down, and compares it against the data sample Annette's exocortex is analysing.