Plutonic Rainbows

EGLLZAZX is the kind of address every flight plan filed into a London control room still travels through, eight characters, fixed width, an ICAO location indicator stitched to a three-letter facility code. The format was designed in the 1950s for landline teleprinters that punched their output onto paper tape and clacked it out again at the other end. Every flight plan, every NOTAM, every METAR update, every distress and urgency message between airfields, the same eight characters, the same circuit grammar. Aircraft navigate by GPS. Their paperwork still arrives by telex.

The Aeronautical Fixed Telecommunication Network has been the ground-to-ground backbone of global aviation since the early 1950s, and the bones have not been replaced. Messages stay text-only, capped at roughly 1800 characters, ASCII with the radioteletype shift codes the original infrastructure required. The Wikipedia entry notes, drily, that "the message format betrays the extensive use of radioteletype links in the past." It still does. The end-of-message sequence is NNNN, followed by twelve letter-shift signals that exist only because some terminal somewhere might still be reading them.

You can read the inheritance directly off the facility codes that sit in the second half of the address. YNYX is a NOTAM office. YMYX is a local met office. ZTZX is a control tower. ZQZX is an area control centre. Indian Meteorology Department training material from 2020 lists these as the live address grammar of the international weather feed, and that document is not a history paper, it is operational. The address scheme has outlived the machines that justified it, and every aviation authority in the world is still typing into it.

The official line is that AFTN is "obsolescent". The Aeronautical Message Handling System, based on X.400 over IP, is supposed to replace it. AMHS handles binary attachments, digital signatures, XML weather messages (IWXXM, the new format, contains characters AFTN cannot physically transmit). ICAO encourages all member states to complete the transition as part of the Global Air Navigation Plan. The reality is gateway converters. Most regions run both networks in parallel and let an AFTN/AMHS gateway translate between them, because the cost and certification burden of cutting AFTN entirely is more than any single authority wants to carry. The old network keeps running because the new one cannot quite finish replacing it, and because the old one, for the messages it was designed to carry, still works.

The haunting is structural, not nostalgic. A character limit set by 1950s tape readers now constrains the format of weather products designed for satellite-era forecasting. An eight-letter address scheme now governs how a Boeing 787, a machine that knows its own position to within a metre, announces its intentions to the world. The grammar of a punched-tape machine sits between every modern aircraft and the controllers who route it. Nobody chose that arrangement in 2026. It just survived everything that was supposed to replace it.

The same logic keeps the fax machine humming in radiology and oncology, and the same logic keeps POCSAG running through hospital walls that block every protocol designed later. There is a pattern. The oldest layer of the stack is usually the one nobody can afford to remove, because every replacement carries failure modes the original did not have. AFTN was built for messages that absolutely must arrive, in a format that absolutely must be parsed by the next station along the chain, with no negotiation. Modernity keeps trying to negotiate. The 1950s spec keeps arriving.

Alexander Liberman, the editorial director of Condé Nast through most of the second half of the twentieth century, asked Peter Lindbergh a question. Lindbergh had told him, in plain terms, that he could not stand the kind of woman American Vogue kept putting in front of him. Over-styled, heavily made up, surrounded by limousines and small dogs, supported by a rich husband. Liberman, who had heard this complaint before but never from someone he wanted to hire, asked Lindbergh to show him what he meant instead.

Lindbergh picked the stylist Carlyne Cerf de Dudzeele, who liked gold Rolexes and serious jewellery and was therefore the wrong person for the job on paper. He told her not to worry about the clothes. Just bring some white shirts. He picked six models he liked at the moment: Estelle Lefébure, Karen Alexander, Rachel Williams, Linda Evangelista, Tatjana Patitz, and Christy Turlington. None of them was famous yet. He flew the whole group to Los Angeles and put them on the beach at Santa Monica.

What he produced was almost nothing. Six women in oversized men's shirts, mostly unbuttoned, almost no makeup, hair left to do what the wind did. Bare feet. Underwear, where you could see it. Black and white. They were laughing in some frames and looking past the camera in others. There were no clothes to sell because the only clothes were borrowed shirts.

He brought the prints back to New York and laid them out on a table in front of Liberman and the then-editor Grace Mirabella. In his telling years later, the two of them looked at each other and said little. The pictures were not what anyone had asked for, because the brief had been so vague it could not have been. They ran in the August 1988 issue of American Vogue. Within eighteen months, Lindbergh was working with the same group in different combinations, sometimes adding Naomi Campbell, sometimes Cindy Crawford, until in January 1990 he shot the British Vogue cover that everybody now reaches for when they want to date the start of the supermodel era. The Versace finale in Milan eighteen months after that was the same idea staged with music.

The Santa Monica picture is the one that gets less credit because it ran before anyone knew what they were looking at. There is no front-page narrative attached to it, no music video, no runway moment. It is a magazine spread that happened to contain six women whose names did not yet matter, in a setting that contained nothing else, photographed by someone who had spent his career arguing that the clothes were a pretext and the woman was the point. The thesis was the picture; the picture was the thesis. Everything that followed in the next six years, the big-haired Versace catwalks, the George Michael Freedom! '90 video, the perfume contracts, the trademarked first names, started here and worked outward from a shoreline.

What is strange in hindsight is how thin the apparatus around it was. No production designer, no celebrity, no set, almost no clothes. A photographer who had argued his way into a magazine he didn't like and a stylist who agreed, against her own instinct, to leave the jewellery in the case. The picture they made together did not announce itself. The supermodel decade walked out of it slowly, like the tide going back.

Butlin's closed its Filey and Clacton camps in 1983, and that is the year the British holiday camp stopped being a national default and became a thing that people remembered. Billy Butlin had opened the first camp at Skegness in 1936 with the slogan Our true intent is all for your delight. At its peak Pontins ran around thirty camps, Butlin's ran the largest sites, Warner's operated a second-tier circuit, and Ladbrokes had bought up older sites including Caister-on-Sea, which had been operating since 1906 and is sometimes credited as the first camp of all. The whole apparatus assumed that an industrial family with a fortnight off in August would drive to a fenced site on the east or north-west coast and stay inside the fence for the whole fortnight, eating in the dining hall, queueing for the heated outdoor pool, listening to the Redcoats announce the children's talent contest on the tannoy at half past two.

What killed it was Spain. The package-holiday industry had been gestating since the 1950s, but the things that made it mass-market arrived together in the late 1960s and early 1970s: bigger and faster charter aircraft, the easing of the post-war currency-export limits, Franco's industrial-scale construction of resort hotels along the Costa Brava and Costa del Sol, and the price war that Intasun fought with Thomson through the 1980s. By 1983 a fortnight in a half-finished Benidorm tower with full board cost the same as the equivalent fortnight in a Filey chalet with full board, except in Benidorm the sun showed up. Butlin's closing two of its largest sites in the same year was an admission. The camp model required the British weather to be acceptable. It was no longer competitive against a model that didn't.

What the camps left behind, in the places they didn't redevelop for housing, is a very specific kind of ruin. A holiday camp is not a building, it is a system of buildings: a row of identical chalets in three colour-coded lines, a central pavilion with a ballroom and a stage, an outdoor pool with a diving tower, a boating lake, a row of arcade buildings, and a perimeter fence with a single gatehouse. Most of those components survive demolition unevenly. The chalets go first because they are cheap to flatten. The ballrooms last longest because they are unusually large clear-span structures with concrete floors and nothing easy to convert them into. You can still walk past a Pontins ballroom on the north Wales coast and recognise it immediately from the pitched copper roof and the absence of windows along the lower walls. Inside, the parquet is still down. The stage curtain has been pulled across and left. The spot where the resident band's drum kit lived has a slightly darker patch where the carpet didn't fade.

The surviving operators rebranded out of the word camp in the 1990s because the word had become a liability. Holiday village, holiday park, holiday centre. Center Parcs opened in the UK in 1987 and proved that British families would still pay to be enclosed somewhere with their entertainment provided, as long as the enclosure was made of pine trees and didn't have a row of identical peach-coloured chalets visible from the access road. Butlin's narrowed to Skegness, Bognor Regis and Minehead, rebuilt all three around indoor water complexes, and stopped using the chalet form altogether. Pontins was sold to Britannia Hotels in 2011 and continues a thin existence at a handful of sites that look, in the photographs, like they have been preserved on purpose at the exact moment they stopped making money.

The thing the holiday camp had, and that no current British holiday product has, was the assumption that a stranger through a megaphone could organise your week. The Redcoat and the Bluecoat were not service staff. They were closer to parish priests in shorts, structuring the day with sports days, knobbly-knees contests, glamorous-grandmother heats, afternoon bingo, and the children's club so the parents could have an hour. That structure is what the surviving ruins remember. The pool is empty, the stage is empty, the tannoy brackets are still on the wall, and the calendar of forced collective fun has dispersed into seven hundred individual streaming subscriptions watched alone in seven hundred caravans on the same coast.

On Monday, Mira Murati's Thinking Machines Lab previewed a product it calls an interaction model. The pitch, summarised by the Business Insider piece that ran today, is a system that handles speech the way two people actually handle it: listening and talking at the same time, taking interruptions in stride, translating between languages on the fly. The wider launch is promised for later this year. What was shown on Monday is a preview.

The architectural claim is the interesting bit, not the demo reel. Every voice assistant most people have used, including the current crop of LLM front-ends, is fundamentally turn-based. You speak, it waits, it transcribes, it thinks, it responds. Even when the latency drops to under a second the structure is still strictly sequential. An interaction model, by contrast, runs the listening loop and the speaking loop in parallel, so the foreground stays responsive while the heavier reasoning happens underneath. The reported latency is around 0.4 seconds with internal micro-turns of about 200 milliseconds, which is roughly the point at which human conversation stops feeling like a walkie-talkie call.

Whether this generalises beyond a demo is a separate question. Full-duplex audio is not a new idea in research, it's been sitting around in conversational systems work for years, and shipping it as a product is mostly an engineering exercise in keeping a generative model coherent while it is being talked over. The hard part, historically, has been preventing the model from collapsing into either a babbling overlap or a panicked silence the moment the input pattern departs from the training distribution. Real interruptions are messy. People trail off, backtrack, change their minds mid-clause. You can build a duplex system that handles a scripted interview beautifully and falls apart on a phone call to a plumber.

The other half of the story, in the same Business Insider report, is that Thinking Machines has now lost roughly a third of its founding team to OpenAI, Meta and xAI, with the one-year cliff vesting being one of the levers. I wrote about an earlier wave of those departures in January. The pattern has not changed since. A lab founded by a charismatic ex-incumbent raises a fortune at a valuation that prices in superintelligence, and the talent it gathered to justify that valuation gets bought back, individually, by the labs with even more compute and even larger compensation envelopes. The product gets shipped or it doesn't. The founders mostly end up somewhere else.

So I'm reading the interaction-model preview with two different kinds of attention. As a technical demonstration, it's a genuinely fresh framing of what an LLM-fronted voice product can be, and it points at a future where the dominant mode is duplex rather than turn-based. As a corporate signal, it is the kind of thing a lab puts out when it needs to show the market that the engineering core still functions even while the org chart is being rewritten in real time. Both readings can be true. They usually are.

The thing I want to know is whether the underlying model is small enough to run on a phone, or whether the 0.4-second latency depends on a hyperscaler-grade GPU sitting on the other end of a private fibre. The press release does not say, which is itself a signal. Watch for the API price when the wider launch happens. That will tell you which of those two worlds we're in.

On Monday OpenAI launched a separate company whose product is not a model. The new entity, the OpenAI Deployment Company, will take an initial four billion dollars in commitments and embed Forward Deployed Engineers inside client organisations to "design, build, test, and deploy production systems" connecting OpenAI models to the customer's data, tools and processes. Folded into the announcement is the acquisition of Tomoro, an applied-AI consultancy whose roughly 150 engineers (counting Tesco, Virgin Atlantic and Supercell among their clients) become the new venture's first staff once the deal closes.

The list of founding partners is the part worth staring at. BBVA, Goldman Sachs, SoftBank Corp, Warburg Pincus, B Capital, Emergence Capital, Goanna, WCAS. The investors include Advent, Bain Capital and Brookfield (led by TPG). And then, sitting in the same paragraph as the venture capital, three of the largest consulting firms on the planet: Bain & Company, Capgemini and McKinsey. This is not a typical investor roster. It looks more like the cap table of a systems integrator than of an AI lab.

That is, I think, the actual story. For three years the pitch from San Francisco has been: the model is the product, the API is the distribution, every other layer is commodity glue that customers will figure out for themselves. The new venture concedes, with a four billion dollar opening bid, that the glue is where the difficulty lives. Most enterprises cannot ship a production AI system from API access alone. Someone has to sit in their building, read their data schema, argue with their compliance team, instrument the failure modes, and stay around long enough to fix what breaks in week six. That is consulting work, and OpenAI has just stopped pretending otherwise.

The timing is uncomfortable for them. The same week DeployCo launches, Ramp's enterprise spend index shows Anthropic ahead of OpenAI in business adoption for the first time: 34.4 percent of Ramp's fifty-thousand-firm sample paying for Anthropic, against 32.3 percent for OpenAI. A year ago Anthropic was on nine percent. The lead is narrow and the methodology is partial, but the trajectory is the thing. The company that ignited the boom is no longer the default enterprise choice, and it is responding by hiring the kind of organisation it once said the boom would render unnecessary.

There's a coordination tax in any deployment that vendor benchmarks never capture; somebody has to pay it. DeployCo is OpenAI's bet that paying it directly, with engineers on the customer's floor, will let them charge for the surface area the API alone cannot reach. The interesting question is whether McKinsey and Bain see this as a partnership or as a beachhead. The previous wave of enterprise software, Salesforce and SAP and Oracle, ended up sharing the implementation pie with exactly these firms, and the implementation pie turned out to be larger than the licensing pie.

What you are watching, then, is not a strategic addition. It is OpenAI admitting that the investment math of building ever-larger models needs a different kind of revenue to support it, the kind that comes from being inside the customer's walls rather than behind a developer portal. The model business is still there. But the company has noticed, two and a half years late, that the model business by itself does not scale into a hundred billion of enterprise revenue. So it is becoming a consulting firm with a model attached, and it has brought the consulting firms along to help it do that.

A £20 SDR dongle, an antenna stuck to a kitchen window, and a copy of multimon-ng will still pull patient names, bed numbers, and clinical handover notes out of the air above most British hospitals. The protocol carrying them was standardised in 1981, under the chairmanship of the British Post Office, by a committee called the Post Office Code Standardisation Advisory Group. The acronym, POCSAG, is one of the longest-surviving pieces of pre- privatisation telecoms naming still in active operational use. Everything else the Post Office shipped that decade is in a museum or a skip. POCSAG is in a cardiac arrest team's belt clip.

Trend Micro mapped this in their 2016 Leaking Beeps report and TechCrunch confirmed the same pattern across NHS trusts in 2019. PageOne, the last remaining commercial paging network in the UK, quietly tells customers in their terms and conditions that messages can be intercepted, and that encrypted services are "available if required". Most trusts are not required. They run private networks, on private repeaters, broadcasting forty-year- old uncoded BCH(31,21) codewords into the same skies that carry end-to-end-encrypted everything else.

In 2019 Matt Hancock told the NHS to be off pagers for non- emergency use by the end of 2021. That deadline passed. Cambridge University Hospitals did manage a clean migration to an EHR- integrated secure messaging system, documented in BMJ Health & Care Informatics, and even there the bleep system was kept on standby rather than physically decommissioned. The implementer's report uses a phrase that should be carved into the side of every NHS digital strategy document: "costly obsolescence." Pagers cost more than the secure alternative and yet nobody can quite kill them.

The reasons are not sentimental. Hospital walls are thick enough to stop X-rays, which means they also block most mobile and WiFi signal. POCSAG runs slow and loud in the VHF band (UK allocations sit around 138 and 153 MHz), and it gets through concrete. The protocol is one-way and asynchronous, which means a paging transmitter can blanket multiple sites from a single high site without any handover logic. There is no app to crash, no battery management daemon to drain, no operating system update window. The receiver chirps. The carrier nurse runs.

Every proposed successor introduces failure modes the existing system does not have. TETRA, the encrypted radio standard the UK emergency services have spent the last decade trying to migrate away from, requires expensive handsets and a working core. App-based bleep replacements depend on the WiFi the X-ray-proof walls were designed to defeat. Smartphones get locked, lost, charged on the wrong ward, taken home in someone's pocket. The pager is a cheap, replaceable, one-purpose object that survives a drop into a sluice room. Hospitals know what they want from a critical messaging layer, and the 1981 spec, by accident, still describes it more honestly than anything sold to replace it.

The haunting is not that POCSAG persists. It is that the persistence is rational. A protocol designed before the Falklands War, before privatisation, before the web, before HIPAA, before GDPR, before the entire regulatory edifice that should have condemned it, is still load-bearing because it does one job reliably and because all of its replacements quietly do that job worse. The 2019 SDR demo was treated as a scandal. It should have been treated as a question. If a forty-year-old uncoded radio protocol is still the most dependable thing in the building, what exactly have we been building?

The same logic keeps the fax machine humming in radiology and oncology, and the same logic is why Capita can still hold the frequency the Home Office has been trying to replace for a decade. The ghost is not the technology. The ghost is the absence of anything better.

Some cities present themselves neatly. Others only reveal themselves from the side, in the service road, under the bridge, behind the civic building where nobody was meant to linger. Bristol, perhaps more than most, belongs to the second category. Its public face is easy enough to identify: Clifton, the bridge, the harbour, Georgian terraces, student cafes, hills, postcard drops of light over the Avon Gorge. But there is another Bristol too, harder, stranger, more provisional. A Bristol of underpasses, concrete walkways, civic backsides, rain-stained walls and fluorescent windows. These two photographs seem to hold both versions of the city in suspension.

The first image, taken behind the old police station in 1984, is almost aggressively unpicturesque. It is not trying to charm anyone. There is no harbour glimmer, no terrace elegance, no "historic Bristol" being offered up for approval. Instead, we are in one of those back-of-city spaces that British urban planning produced in abundance after the war: a narrow road hemmed in by brick, concrete, office windows, walkways and shop units. The city not as spectacle, but as infrastructure.

Overhead, enclosed bridges cross the street like institutional arteries. They do not invite you to look up so much as remind you that the real business of the place is happening elsewhere, behind glass, above street level, in corridors and offices. The street below feels like a leftover channel, somewhere you pass through rather than arrive in. Even the shops have the air of temporary tenants in someone else's plan.

And yet the photograph is compelling precisely because of this ordinariness. The mundane details now become the emotional charge: the bin in the road, the dull double yellow lines, the small shop signs, the pedestrians walking away, the faint glow of interior lights in an office block. Nobody in the scene is posing for history. Nobody seems aware that this ordinary Bristol afternoon will one day become almost unrecoverable.

That is the peculiar ache of such images. The past is rarely arranged like a memory while we are living through it. It is mostly made of errands, side streets, dead time, unremarkable buildings and moments spent going somewhere else. Later, these overlooked places become portals. The unattractive becomes precious because it was not preserved for us. It survived only by accident.

The old Bridewell site has a longer and messier history than the photograph needs to explain. The Island's own account says the Central Police Station complex was built in 1928 and opened as a police station in November 1930, on Nelson Street, near the site of an earlier station. By the time this picture was taken, the building was already moving toward its afterlife. Avon and Somerset Constabulary had been created in 1974, headquarters functions started moving out the following year, and the remaining CID offices left in 1986 when the New Bridewell Police Station was completed across the road.

So the photograph catches the place in a particular middle condition. Not historic yet. Not dead. Not quite modern anymore.

The image has the mood of municipal modernism after the optimism has drained out of it. Those concrete walkways once belonged to a future: efficient, elevated, planned, rational. By 1984, they already look tired. The rain has found them. The concrete has darkened. The dream of circulation and civic order has become a damp canyon behind a police station.

It is easy to mock this kind of architecture, and often it deserves it. But the photograph does something subtler. It shows the melancholy dignity of a failed future. These buildings were not ancient, not yet ruins, not still new. They occupied that strange middle age of the urban landscape, when yesterday's progress has become today's background.

If that first photograph is Bristol as back corridor, the second is Bristol as apparition. The Clifton Suspension Bridge, seen from the bottom of the Avon Gorge in February 1992, is familiar and unfamiliar at once. The bridge itself is instantly recognisable, but the angle changes everything. We are not up at Clifton Observatory, not on the elegant side of the city, not looking at a tourist view. We are down below, at river level, where the gorge is steep and shadowed, where the road runs tight against the cliff and the Avon withdraws into mud at low tide.

From here the bridge appears almost impossible: a thin white line drawn across blue air, suspended between two enormous masses of stone. It is more idea than object. The road, cars, tunnel mouth, lamp post and warning sign pull the scene back into the early 1990s, but the bridge itself seems to exist outside the photograph's date. It belongs to another scale of time.

That contrast is what makes the image work. The gorge is geological time. The bridge is Victorian time. The road is twentieth-century time. The cars are 1992. The photograph is now memory. All these layers sit together in one frame, and none of them fully cancels the others.

The light helps. February light can be cruelly beautiful: pale, cold, clarifying. Here it gives the scene a kind of blue distance. The trees are bare, the river is low, and the gorge recedes into haze. It does not feel cosy or picturesque. It feels like a threshold, a place of departure, arrival, passing through. Bristol as a gap between rock and sky.

The bridge is an obvious icon, but the official history is stranger than the iconography. The Clifton Suspension Bridge Trust describes it as a bridge completed after Brunel's death by John Hawkshaw and William Henry Barlow, opened on 8 December 1864, and still maintained through the toll system. That helps explain why the photograph feels layered rather than merely scenic. The bridge is a Victorian engineering object that still carries daily traffic, a tourist image that remains a working piece of infrastructure. It is not just looked at. It is used.

The two images seem, at first, to have little in common. One is cramped, grey, urban, almost claustrophobic. The other is open, blue, monumental. One shows the city's discarded modernity; the other shows its enduring icon. One belongs to the service entrance, the other to the civic myth. But they share something essential: both are images of things that continue without us.

This may be why photographs of places can feel more unsettling than photographs of people. A face declares its vulnerability. A building, a bridge, a road, a cliff, these simply remain. They do not mourn the versions of us who passed through them. The city carries on, altering itself, erasing itself, repainting itself, demolishing one decade and marketing another.

The first photograph may show a Bristol that has largely vanished: shops renamed, buildings altered or demolished, walkways removed, traffic systems changed. The second shows a Bristol that still appears to exist, because the bridge remains. Even there the continuity is deceptive. The exact February air is gone. The particular cars are gone. The quietness of that road, the colour of that film stock, the early 1990s atmosphere, all gone. The permanent landmark only makes the vanished details more visible.

We think we want the monument, but it is often the incidental that hurts. A lamp post. A shop sign. A road marking. The shape of a bin. The colour of fluorescent light in an office window. The precise shade of a winter sky in 1992. The old city does not return as a grand historical narrative. It returns as texture.

There is also a faintly hauntological quality to both images. Not because they show ghosts, but because they show futures that failed to remain future. The 1984 street is haunted by the post-war promise of planned urban life. The 1992 gorge is haunted by the Victorian sublime, by the idea that engineering could draw a perfect line across a natural void. In both cases, the image contains a vanished confidence.

And yet neither photograph is simply nostalgic. Nostalgia often tidies the past. These images do not. The concrete street is bleak. The gorge road is not romantic in any soft sense. The river mud is exposed, the shadows are hard, the urban fabric is compromised. What makes them moving is not that the past was better. It is that the past was real, physically, stubbornly real, and yet is now unreachable.

You could go to Bristol now and stand near these places. You could find the bridge, walk the gorge, search for the old police station area, compare street views, identify what changed and what survived. But you could not step into either photograph. You could not recover the smell of the street behind the police station in 1984, the sound of those cars, the exact rhythm of that weekday. You could not re-enter February 1992, with that blue air and those shadows and that particular version of the Avon below the bridge. The laws of physics, annoyingly, remain firm on this point, and time refuses planning permission.

What remains, then, is the photograph: not a doorway, but evidence. Evidence that these arrangements of matter and light once existed. Evidence that the city had these moods. Evidence that people passed through them, mostly unaware that they were moving through what would later become history.

Together, the two images form a small portrait of Bristol's split personality. Bristol the concrete back passage; Bristol the sublime gorge. Bristol the failed precinct; Bristol the impossible bridge. Bristol as damp municipal afterthought; Bristol as suspended dream. The real city is the tension between them, the place where a stained concrete walkway and a world-famous suspension bridge can belong to the same emotional geography.

Cities store time unevenly. Some things endure. Some things are erased. Some survive but no longer mean what they meant. And some, by being photographed almost casually, become more vivid after they have disappeared than they ever were when they stood before us.

He almost quit before the show. Gucci was hemorrhaging money, the previous collection had landed without a review anyone could remember, and Tom Ford later said there was a moment when nobody was looking at anything he did. He could have sent anything down the runway. He sent the Fall/Winter 1995 ready-to-wear instead, in Milan, and the line between "almost quit" and "biggest designer of the decade" turned out to be that one show.

The clothes were not complicated. Jewel-tone satin shirts in emerald, sapphire, and aubergine, unbuttoned down past where a shirt is normally unbuttoned. Velvet hip-huggers cut so low they read as a sneer at the high-waisted minimalism the rest of Milan was selling that week. Horsebit loafers with a patent finish so glossy the photographers complained about the bounce. A handful of sharp wool suits. That was most of it. The collection was short, the silhouette was singular, and the styling was about seventy-five per cent of the message.

Ford killed the back-light. The Milan runway convention in 1995 was a long thrust stage with the front row facing each other across it, lit so that the buyers and editors could be seen as much as the clothes. Ford had the back lights dropped and ran the show with a hard spot down the centre, which meant the audience couldn't see each other and had no choice but to watch the clothes. Kate Moss walked. Shalom Harlow walked. Amber Valletta walked. The room got quieter than Milan rooms usually get.

The thing nobody could quite explain at the time was the register. Late minimalism was the dominant note that season, Helmut Lang's slip dresses, Prada's reduced palette, the careful restraint that the late nineties would later be remembered for. Ford's collection was the opposite of all of it, sexual in a way that was almost confrontational, glossy, expensive-looking, with a seventies disco floor underneath it. Amy Spindler wrote in the New York Times that he had brought cool back to luxury at a moment when street fashion had been the only thing that felt cool for years. That was the polite version. The less polite version was that the show looked like sex, and the buyers reacted to it accordingly.

Madonna wore the key look to the MTV Video Music Awards that September, a satin shirt unbuttoned to the navel and the velvet trousers, and a collection that had been hanging in Milanese showrooms became, in a single night, the thing half-famous people in Los Angeles wanted to be photographed in. By the following autumn, Calvin Klein, Versace, and Chanel had all shown their own hip-huggers. Donna Karan put a note on her skirt tags explaining where they were meant to sit on the body, because customers were complaining about waistbands that no longer hit at the waist.

The Chanel show that same Milan-and-Paris fashion month, at the Cirque d'Hiver in March 1995, was Karl Lagerfeld doing his own version of the supermodel spectacle, and the two collections shared a casting roster and a sensibility about what a runway could look like in the mid-nineties. Both shows leaned on the same handful of women. Both treated the audience as a secondary consideration. The difference was that Lagerfeld was already at the top of the mountain and Ford was hauling Gucci up it from base camp.

What Ford did at Gucci over the next nine years has been written about so many times the receipts blur, the 1,200 per cent sales growth, the Pinault acquisition, the eventual YSL appointment, the fall-out in 2004. The thing that gets written about less is how narrow the moment was. The same designer six months earlier had been weeks from firing. The same house a year before had been weeks from administration. The collection that turned everything was not a relaunch built with a year of preparation and a hundred million in marketing. It was one short show in Milan, with a spotlight off the audience and a row of jewel-toned satin moving through it.

The last ABC Cinema in Britain closed in Bournemouth in early 2017, showing Back to the Future on a public vote. The building had been designed in 1937 by William Glen, the chain's regular architect, and the sign over the entrance had survived a corporate buyout by Odeon in 2000 only because the two cinemas faced each other across Westover Road and management worried about the confusion of two identical names on the same stretch. Eighty years on the same site, and the end was a film about a teenager going home to 1955.

ABC had peaked at more than four hundred cinemas. That number is hard to picture now. It meant that a Lancashire mill town the size of Burnley had two of them on the same parade, and a market town of twenty thousand people had at least one, and a seaside resort had three or four operating in parallel through the summer. The chain was a circulatory system; the films were the blood. By 1984 UK cinema admissions had collapsed from a wartime peak of 1.64 billion to 54 million, a number that looks like a misprint. Television took most of it. The package holiday took the summer. The first purpose-built multiplex opened in Milton Keynes in 1985 and finished what was left.

What disappeared with the chain was a particular institution that had no real name in English. The seaside Odeon or ABC, the kind on the esplanade at Bournemouth or Great Yarmouth or Blackpool, did not function in summer the way it did in winter. The 2,000-seat auditoriums switched from films to live variety for three months a year, with stars like the ones the working men's clubs were also booking, just on a bigger stage. The big-house variety circuit intersected the cinema circuit inside the same buildings, and the same families went to both. When cheap flights to Spain emptied the resorts, it was the cinema-as- variety-theatre that died first, and the cinema-as-cinema that followed it down a few years later.

The texture is hard to reconstruct from photographs. The smell of a British cinema in 1978 was the smell of upholstery that had absorbed forty years of tobacco smoke, mixed with the orange chemistry of Kia-Ora and the popcorn-substitute that British exhibitors used because real corn was American. There was an intermission, with a trolley pushed up the aisle. The Rank Organisation gong played before the feature, a thing that has now been turned into a YouTube nostalgia clip with comments from people younger than the clip itself. The projector was visible from your seat through the haze above the smoking section, throwing a cone of light across the ceiling that looked solid where the dust hit it. The film flickered. You could see it flicker.

Streaming does not replace this, not because the picture is worse, but because the structural conditions are wrong. The seaside cinema was an institution of bounded time. You bought a ticket for a screening that started when it started and ended when it ended, and there was nothing you could do about either. The intermission was not a pause button; it was a fact about how reels worked. You were in a room with several hundred strangers who had also paid, and the social etiquette of that room — coats off, cigarettes lit where permitted, no commentary — was negotiated over decades and is gone with the chain that hosted it. A film on a laptop is something else entirely, and it doesn't have to apologise for that, but it isn't the same kind of object.

The buildings are still there in places. Some have become churches, some are bingo halls, some are flats, and a small number have been reopened as community cinemas by people who remember the originals. The Odeon in St Albans reopened as the Odyssey in 2014, overseen by the entrepreneur James Hannaway after the chain had walked away. Six "Oscar Deutsch" Odeons from the founder's original 1930s build-out are still trading as Odeons, including Leicester Square. The hauntology of all of this is not that the cinemas closed. It's that they were replaced by something that performs the same function and delivers a structurally different experience, and a generation grew up never knowing what the previous one had been, except as a smell they vaguely associate with their grandparents' coats.