The Machine That Fills Itself

Every morning, thousands of people arrive at work to find the vending machine full, the coffee ready and the water cooler waiting. It looks effortless. It isn't. This is the story of the people behind the machine that apparently fills itself.

There is, apparently, a vending machine somewhere in Britain that fills itself.

Nobody has ever actually seen it happen, of course. There is no grainy CCTV footage of a packet of Walkers floating mysteriously through the air at three o'clock in the morning, nor any evidence that confectionery is being moved around a Norfolk warehouse by poltergeists. Nevertheless, the evidence is compelling, because every morning people arrive at work to discover that something which looked decidedly sorry for itself the previous evening has somehow become full again.

Yesterday afternoon there were three cans of Coke left, the KitKats had gone completely and the sandwich shelf contained one rather lonely-looking cheese and pickle that had reached the stage in its life where even somebody who had forgotten lunch was beginning to consider whether hunger might be the better option. The coffee machine was running low on cups, the chocolate canister was nearly empty and somebody had managed to leave enough dried cappuccino around the dispense area to suggest that at least one drink had attempted to escape.

Yet this morning everything is back.

The KitKats have returned. Fresh sandwiches are sitting neatly behind the glass, the crisps are back in their spirals and the coffee machine is clean, full and once again capable of producing several hundred variations on the theme of hot brown liquid. Even the bin has emptied itself, which is particularly impressive because bins, unlike vending machines, have never shown much aptitude for magic.

Across the room, the water cooler appears to have joined in. The empty 19-litre bottle sitting beside it yesterday has disappeared and several full ones have taken its place, presumably through the same mysterious process that causes hotel towels to become clean and office toilet rolls to reproduce overnight.

Nobody questions any of this because nobody needs to.           

At half past eight somebody walks into the canteen discussing last night's football, taps a bank card against the reader and spends considerably longer choosing between two chocolate bars than the decision could possibly justify. The reader chirps, a spiral turns and a Twix drops into the tray. Twenty seconds later its new owner is walking away, already thinking about something else.

This is precisely how vending is supposed to work. The machine is full, the coffee is ready and the water is cold; nothing remarkable has happened, except that almost all of it happened several hours earlier, while the person buying the Twix was still in bed.

At 3.47 in the morning, somewhere in West Norfolk, an alarm clock goes off.

There are certain times of day that clearly belong to human beings. Seven o'clock is early but respectable. Six suggests purpose. Five implies either an airport or livestock. But 3.47 is not really morning at all. It is the middle of the night with ambitions, occupied largely by bakers, foxes, people with newborn babies and radio presenters broadcasting to an audience they can only assume exists.

And vending operators.

By the time most people are considering whether they can justify another nine minutes in bed, one of them is already dressed and heading towards a white van waiting outside.

Some begin at Tilney; others take the van home and start almost from their front door. Either way, there isn't really a commute because the van isn't simply transport to work. For most of the day it will be stockroom, office, dining room and, occasionally, somewhere to sit for ten minutes while the rain hammers against the windscreen.

Most of the stock was loaded the previous afternoon, picked against tomorrow's route and arranged in the back of the van: drinks, crisps, chocolate, coffee ingredients, cups and all the other apparently insignificant things without which the magical machine becomes considerably less magical. Only the frozen food waits until morning, travelling directly from the warehouse freezer to the handful of sites that currently take it.

The route is waiting too.

The handheld device contains a neat list of customers and machines, arranged with the confidence of something that has never actually driven along the A47 behind a tractor. There may be twenty machines on a compact local route, each notionally allowed half an hour, or only five or six when geography becomes involved. Around King's Lynn the van might cover forty miles; a run towards Stevenage can turn into two hundred. At four in the morning, though, all of that still lies ahead. The roads are mostly empty, the heater is beginning to make the cab habitable and the radio has the peculiar intimacy it acquires when there seems to be nobody else awake to hear it.

Inside the van is everything the operator will need for the next several hours and quite a lot that no official stock list has ever requested. Hand cream lives in a door pocket, deodorant somewhere behind the seats, charging cables wind themselves around objects they weren't connected to yesterday and there may be some small ornament attached to the dashboard which serves no practical purpose whatsoever but has nevertheless become part of the vehicle.

Spend enough time around people who work from vans and you realise that the vehicle slowly becomes an extension of the person driving it. Since a surprising proportion of the working week is spent inside it, everybody develops their own system. Some are immaculate. Others make sense only to the person who owns them. Either way, ask for something and the operator generally knows exactly where it is.

And yet the computer is important because modern vending produces an extraordinary amount of information. By the time the operator arrives at a customer, the handheld already has a good idea of what should be inside each machine. It knows what has sold, what hasn't and how much stock ought theoretically to remain; twelve cans of Coke Zero have disappeared since the previous visit, nobody has touched a particular packet of crisps and the chocolate selection that looked perfectly adequate last Tuesday has been attacked with unexpected enthusiasm.

What it cannot tell you is why. It doesn't know that a factory has been running overtime, that another night shift has been added or that the temperature has climbed into the thirties and several hundred people have suddenly decided the cold-drinks machine is the most important piece of equipment in the building. After enough visits, the operator does.

The computer knows what sold.

The operator knows the customer.

By five, the landscape outside the windscreen is beginning to change. Industrial estates emerge from the darkness under the orange glow of security lights. A few cars appear in factory car parks. Delivery lorries wait outside gates and night-shift workers begin thinking about home while the rest of the country is still negotiating with its alarm clocks.

The van turns into a site the operator has visited so many times that the sat-nav has long since become redundant. She knows which gate will be open, where security prefers her to sign in and, perhaps more importantly, where not to park. Every workplace develops rules nobody bothers writing down because everyone who needs to know them already does; this door sticks, that lift takes forever, and loading bay three is best avoided unless you particularly enjoy conversations with forklift drivers.

After enough visits, these things become instinctive. So do the people.

The security guard looks up.

"Morning."

"Morning."

There is no introduction because there hasn't been one for years.

The operator signs in, loads the trolley and heads inside towards the machine that will, a few hours from now, appear to have filled itself.

From a distance it doesn't look too bad. This is one of the vending machine's more useful deceptions: three products sitting neatly at the front of a spiral can create an impression of abundance while concealing an enormous amount of fresh air behind them. A drinks machine can look reasonably healthy until the door opens and reveals that one selection has barely moved while another has been consumed with unexpected enthusiasm.

Half an Hour

The operator opens the machine and, within seconds, the week's behaviour of several hundred strangers is laid out in front of her.

A particular chocolate bar has had a surprisingly good week. One flavour of crisps has barely moved. Cold drinks have sold faster than expected. Fresh food needs checking carefully because sandwiches, unlike chocolate bars, have a fairly unforgiving relationship with time. Dates are inspected, anything approaching the end of its useful life is removed, and the remaining stock is rotated so the oldest sits at the front and the new stock goes behind.

Filling it is less straightforward than simply cramming every spiral to the back. A busy factory may justify exactly that because experience says much of it will disappear before the next visit; at a quieter office, the same approach would merely create a beautifully illuminated storage cupboard full of ageing confectionery. The operator fills according to sales, with enough margin for the unexpected, and anything that hasn't moved for several weeks is liable to lose its place to something that might.

This is another law of vending. A flavour of crisps can sit untouched for a month; remove it on Tuesday and by Wednesday somebody will demand to know where it has gone.

“I always have those.”

The operator knows they don't because the machine, unlike the customer, keeps records.

The information is nevertheless filed away. Perhaps they'll return. Perhaps they won't. Democracy has limits.

Meanwhile another customer has appeared.

This happens with such reliability that it ought to be incorporated into the machine's technical specification. A vending machine can remain completely untouched for twenty minutes, but the instant the door is opened and several crates are placed directly in front of it, somebody will discover an urgent need for a packet of crisps.

Some wait politely. Others stand close enough to supervise. After enough visits, the operator knows most of them: who buys the same drink every morning, who will ask what's new before purchasing exactly what they bought last week, which receptionist wants to discuss the weather and which security guard requires a detailed post-mortem of Saturday's football.

Some of these relationships have existed for years, built ten minutes at a time beside open vending machines. Holidays are noticed. New jobs are discussed. Children grow up in weekly instalments. People disappear from workplaces and the operator eventually asks where they went because, without anyone consciously deciding it, the person who comes in every Tuesday to fill the vending machine has become part of the place.

By the time the last packet is loaded, the difference is considerable, yet to anyone walking into the room nothing has changed at all. The machine simply looks as it should: full, ordered and clean.

The coffee machine beside it requires rather more attention. Mixing bowls and spouts come out for cleaning, waste buckets are emptied, pipes checked and tea filters changed. The brewer mechanism is cleaned and lubricated before the ingredient canisters are replenished and the cup turrets filled. None of it is complicated in isolation, but miss one small part and somebody will notice soon enough.

Then there are the cups. A typical machine may carry four or five turrets, depending on size, and there is one apparently trivial rule which matters far more than it sounds: don't mix batches within the same turret. Two sleeves of nominally identical cups can differ by fractions of a millimetre, which is nothing to the person drinking from one and quite enough to jam the mechanism trying to dispense it.

It is the sort of detail nobody using the machine could reasonably be expected to know. The operator does.

Coffee machines are particularly unforgiving of small omissions. A canister can be full but useless if its spout remains closed; a waste pipe sitting beside rather than inside its bucket can turn a perfectly routine morning into somebody else's problem remarkably quickly.

Once the canisters are full, the cups replenished and everything cleaned and returned to its proper place, the door closes. To the person arriving for coffee half an hour later, none of this will be visible.

Back outside, the morning has properly begun. The roads are busier now and the industrial estates that were little more than pools of orange light an hour earlier are filling with cars. Another postcode appears on the handheld, another familiar gate comes into view and the whole process begins again, although never quite in the same way. One machine needs little more than a clean and a handful of products; another looks respectable through the glass but consumes most of what is left on the trolley. At a busy factory everything is filled hard because experience says it will disappear before the operator returns, while a quieter office receives rather less. There are dates to check, cash and card readings to record, waste to empty and the occasional selection which has somehow behaved completely differently from the sales pattern of every previous week.

Half an hour at a machine sounds generous when written on a route plan. It becomes considerably less so once the trolley has been unloaded, security has found the right key, somebody has stopped for a chat and three people have decided they urgently need coffee while the machine is open. By the time the van door closes again, the handheld is already pointing towards the next customer.

Familiarity also means remembering the things no generic stock list can safely decide: which sites are nut-free, which need CQUIN-compliant ranges and which products simply don't belong in a particular machine however well they sell elsewhere.

Nineteen Kilograms at a Time

Water changes the arithmetic rather dramatically. A vending operator may spend the morning moving boxes of crisps and chocolate; the water vans deal in nineteen-kilogram units, and there are days when rather a lot of them need to move at once. A small office might want three bottles. A large factory can take more than 120, with the busier sites receiving racks of 32 that can at least be forklifted on and off the van.

The size of the order determines the vehicle because water becomes heavy with surprising enthusiasm. Ninety 19-litre bottles contain 1,710 litres of it, which means the load is already approaching two tonnes before anyone has counted bottles, racks, trolley, driver or the various other things required for the day.

At the customer end there are trolleys, which are excellent inventions right up until the building contains stairs. At that point the entire water-delivery industry abruptly returns to a technology first developed several million years ago: somebody picks the bottle up and carries it.

Twenty bottles up several flights of stairs is 380 kilograms of water moved one bottle at a time, and there is no clever telemetry, route-planning software or artificial intelligence capable of making the final staircase disappear. In February this is tiresome. In 36-degree heat it becomes the sort of experience that encourages surprisingly strong opinions about whoever decided the water cooler belonged upstairs.

Delivery is only part of the job. Bottled coolers are sanitised every three months, while mains-fed machines are stripped, sanitised and given new filters every six. It is unglamorous work involving cleaning chemicals, cloths, replacement parts and the rather important objective that the next person filling a glass should have absolutely no reason to think about any of it.

On the same route, three bottles may disappear into the corner of a small office while the next customer requires more than a hundred, which is one of the reasons a water driver's relationship with the phrase “just a delivery” can become slightly strained.

Eventually the empty bottles are aboard, the full ones are where they need to be and the trolley is folded back into the van. Another address waits on the handheld. The driver climbs into the cab, where the air conditioning has spent the last twenty minutes achieving absolutely nothing useful, and heads back towards the road.

Somewhere between the water deliveries and the vending route, lunch is supposed to happen.

Lunch occurs when geography and the route happen to permit it, which is not necessarily at lunchtime. A sandwich may be eaten in a customer car park, at the side of an industrial estate or somewhere between two appointments while the handheld insists the next machine is already expecting company. There is rarely anything especially picturesque about this. Nobody producing advertisements for commercial vehicles chooses a lay-by outside Wisbech at 1.37pm as the setting in which to demonstrate the freedom of life on the road.

Over enough years, everybody develops landmarks. Some navigate by villages and road numbers. Others appear to possess a remarkably detailed mental map of East Anglia based on the location of McDonald's.

The Plan Meets Norfolk

By late morning, the route that looked so convincing before dawn has begun to acquire amendments. A customer has asked for extra water, another stop has taken longer than expected and somewhere between the two a tractor has demonstrated that the theoretical travelling time between Norfolk postcodes was compiled under unusually optimistic conditions. None of this is disastrous; it simply consumes minutes, and on a route where twenty machines may each have been notionally allocated half an hour, extra minutes are the one thing nobody has loaded into the van.

Extra water is dealt with pragmatically. If a customer calls and one of the vans is already heading that way, the office can add the delivery, assuming there is actually water aboard to deliver. A few bottles can disappear into whatever spare capacity remains; a large order is another matter entirely. The route shifts, the handheld updates and what looked beautifully logical at four in the morning begins to resemble what it always was: a suggestion.

This is how most days evolve. Not through catastrophe, but through accumulation. Five minutes at security, ten waiting for somebody to unlock a door, a customer wanting to talk, temporary traffic lights, a machine requiring rather more attention than expected. Individually, none matters very much. By lunchtime they have quietly eaten the comfortable margin out of the day.

By early afternoon, the van has become a moving record of the day. Full crates have become empty ones, cardboard has accumulated, waste stock has been separated and cleaning cloths used. The neat arrangement loaded at Tilney yesterday has evolved into something more practical and less photogenic, while the operator's hands have acquired the peculiar mixture of cardboard dryness, cleaning chemicals and vending-machine dust that no amount of hand cream ever quite seems to defeat.

The route continues. At one customer the operator is greeted like an old friend; at another, barely acknowledged. Somebody wants to know where their favourite drink has gone, somebody else offers advice while the machine is being filled, and inevitably someone waits until the coffee dispense area has been cleaned to an almost surgical standard before making a hot chocolate and leaving behind a pattern of splashes suggesting the drink was prepared during an earthquake. The operator notices, says nothing and moves on.

By mid-afternoon the earliest starters are beginning to turn back towards Tilney. Others still have customers ahead of them, particularly on the longer routes, and the water vans may have one final delivery squeezed in because somebody rang the office that morning and asked whether there was any chance of getting another six bottles.

Snow in winter, roadworks in summer or an emergency closure can still turn the final forty miles into an expedition, while wing mirrors occasionally disappear after brief and violent disagreements with lorries and other white vans. A day that looked perfectly manageable at five in the morning can still be unravelling ten hours later.

But eventually the roads become familiar again and the signs begin pointing towards home.

At Tilney, the warehouse is waiting.

Coming Home

The yard has entered the second half of its working day. The vans that disappeared into the darkness hours earlier begin returning one by one, no longer carrying the neat loads they left with but the evidence of where they've been: empty crates, flattened cardboard, waste packaging, dirty machine parts, used filters and the occasional product whose date has finally caught up with it.

The transformation is almost perfectly symmetrical. This morning the warehouse emptied itself into the vans so that the vans could fill the machines. Now the machines are full, the vans are empty and the warehouse begins preparing to do the whole thing again tomorrow.

The rear doors open and the day begins coming out. Cardboard and plastics are separated for recycling, waste stock removed and the dirty components from coffee machines carried inside for the dishwasher and ultrasonic bath. The van is swept and tidied while the warehouse works from tomorrow's pick list, replacing what has been sold and adding the small margin experience says may be needed.

The water vans go through their own version of the ritual. Empty bottles and cages come off, used filters disappear into the recycling bag and fresh filters, chemicals and cloths take their place. Within remarkably little time, a vehicle that returned looking as though it had completed a week's expedition begins looking ready to leave again.

By mid-morning the warehouse already had tomorrow's pick lists, so by the time today's vans return, much of what they need next has already been identified.

Two vans return looking suspiciously as though very little has happened to them at all. Boxes are where boxes ought to be, cleaning products remain upright and the cab is sufficiently tidy that a passenger could climb in without first having to relocate half the working day.

One of the vans does, admittedly, consume headlight bulbs at approximately twice the rate of anything else in the fleet. Nobody has established whether this is electrical, mechanical or simply personal, although after enough replacements the distinction has ceased to matter very much.

Then the shared van arrives.

Opening its rear doors reveals a rather more interpretive approach to organisation. Crates, boxes, cleaning equipment and the accumulated archaeology of several working days coexist according to a system which appears completely impenetrable to outsiders but, importantly, not to the people who use it.

One of them will usually have spent much of the day pointing out that there were too many machines and nowhere near enough time. The other says comparatively little and gets on with unloading.

It is a partnership which seems to work.

Quite often the shared van also produces an armful of bread and rolls from a large bakery on the route, which disappear into the office with an efficiency suggesting this particular part of the service operation requires no written procedure whatsoever.

Then, somewhere beyond the yard, comes the bass.

You hear the water van before you see it.

The music grows steadily louder until the van appears at the gate carrying its driver, the day's empty bottles and enough volume to suggest subtle entrances have never been a particular priority.

The man behind the wheel is not small, which is fortunate given that a significant part of his working life involves moving bottles containing nineteen kilograms of water. He climbs out, opens the rear doors and begins unloading whatever the day has returned: empties, cages, perhaps a handful of full bottles from a customer who wasn't there or a delivery that changed after the van left Tilney.

This is also the man whose mental map of East Anglia appears to have been constructed around McDonald's. Other people navigate by road numbers and villages; he can tell you, with remarkable accuracy, how many restaurants lie between one customer and the next.

The man knows the roads.

Mostly.

Familiarity with the roads is useful, although occasionally it can become a little too familiar. On one delivery he approached a low bridge on a road he knew perfectly well, having driven beneath it countless times in his car. Unfortunately, on this particular morning he wasn't in his car.

He was in the van.

There was, apparently, a brief moment when driver, van and bridge all held differing opinions about whether there was sufficient room.

The bridge won.

The front of the roof was ripped open as the van wedged itself underneath, leaving its driver with the uncomfortable task of explaining how a road he knew so well had suddenly acquired a bridge several inches lower than he remembered.

It hadn't, of course.

He had simply brought more van.

The bridge story has, naturally, entered Tilney folklore, although it has plenty of competition. Spend enough years sending people into factories, RAF bases, construction sites and several hundred other workplaces and eventually the improbable becomes merely something that happened on Wednesday.

Operators have found themselves banished from RAF bases when security suddenly tightened, been temporarily locked inside customer sites and arrived at remote construction projects carrying water for people who had apparently decided not to be there. Snow closes roads, emergency diversions send vans miles in the wrong direction and wing mirrors occasionally lose arguments with passing lorries.

Most of these stories arrive back at Tilney in much the same way as the vans do: gradually, and usually accompanied by somebody insisting that what happened was perfectly reasonable until the precise moment it wasn't.

Then there are the problems nobody could reasonably have put on a route plan. Summer brings ants, which regard the warm, sugary interior of a coffee machine rather as humans regard an all-inclusive resort. Their appearance occasionally produces the accusation that the operator must somehow have brought them along, presumably in a special ant compartment somewhere between the cups and the cleaning chemicals.

They haven't.

Mice are less subtle and, when they find their way into a machine, are perfectly capable of eating the crisps, sampling the chocolate and then moving on to the electrical cables, apparently on the basis that dessert should always be followed by something expensive.

Occasionally the stock itself joins in. Cases of cups have arrived with a random few missing their bottoms, a manufacturing defect which only becomes apparent when the machine attempts to make somebody a drink through one. Boxes of crisps have contained packets that were never sealed properly. From the outside everything looks completely normal, right up until the moment it very much isn't.

Individually, none of these things amounts to very much.

A story gets told, somebody laughs, somebody else remembers having seen something similar and, almost without anyone noticing, another tiny piece of experience becomes part of the business.

This is perhaps the thing that is hardest to see from outside. The machines are scattered across hundreds of workplaces and the people looking after them spend most of the day miles apart, yet every afternoon some part of those separate days comes back through the same doors.

An operator mentions that a machine behaved strangely.

An engineer looks up from the bench.

“What did it do?”

A thirty-second conversation follows. Perhaps he's seen it before. Perhaps he hasn't. Someone else has. A photograph gets shown, a part is fetched or a note made for the next visit, and then everybody returns to whatever they were doing.

There is no meeting. Nobody calls it training. Nothing is entered into a PowerPoint presentation.

Yet tomorrow, somebody knows something they didn't know this morning.

As the afternoon wears on, the vans begin changing character again. The empties, waste and dirty equipment that came back with them are disappearing, while cases of drinks, confectionery, cups, ingredients, filters and water take their place. Frozen food will wait until morning; almost everything else is being prepared now.

Every afternoon at Tilney, tomorrow is quietly loaded into the back of a van.

There is no grand moment when this happens. Nobody stands in the warehouse announcing that the future is now aboard route three. It is simply a case of Coke lifted from a pallet, chocolate checked against a list, cups added because somebody knows they will be needed, followed by filters, cloths, cleaning chemicals and a hundred other apparently insignificant things whose importance becomes obvious only when one of them is missing.

Out on the road none of this ever feels particularly large. It is a case of drinks here, half a box of chocolate there, six bottles disappearing into an office and a handful of sandwiches being rotated before lunch. Stand at Tilney while the vans come home, however, and the scale begins to reveal itself.

In an ordinary week the operators will visit somewhere between 250 and 300 machines and move roughly 12,000 individual products through them. The vans will cover around 3,500 miles while another 400 to 600 bottles of water leave the yard — somewhere between seven and eleven tonnes of water before anyone has counted the bottles, racks or vehicles carrying it. Across a month there may be another 100 to 200 cooler sanitisation visits.

All of it exists to create moments so small that the people experiencing them barely notice: the drink being cold when they press the button, the sandwich being fresh at lunchtime, the coffee machine having a cup when they ask for one and the water cooler producing clean water when a glass is held beneath the tap.

By late afternoon, the yard begins thinning out. Some vans will remain at Tilney overnight; others leave again with operators who start their routes from home and will effectively begin tomorrow's working day the moment the wheels start turning before dawn. The office quietens, the warehouse settles and the people who have been awake since hours before sunrise finally begin heading home.

Across East Anglia, however, the machines continue working.

For all the telemetry, route planning and increasingly clever machinery involved, there remains one stubbornly analogue stage in the process which technology has yet to eliminate.

Eventually somebody still has to pick up the box.

Trevor has spent thirty years watching vending machines become cleverer, faster and considerably more expensive. There have been touchscreens, better grinders, cashless payments, telemetry and, more recently, smart fridges capable of recognising what somebody has taken. He appreciates all of it.

He just doesn't confuse it with the thing the customer actually buys.

Talk about coffee machines for long enough and eventually he'll bring the conversation back to a line which has survived rather more technological change than most of the equipment around him.

"What people remember," he'll say, usually after allowing everybody else to finish discussing grinders and screens and specifications, "is the coffee in the cup."

“What people remember is the coffee in the cup.” - Trevor

The machine is the vehicle.

The experience is what comes out of it.

Across East Anglia the machines continue emptying themselves.

One bottle at a time, one packet of crisps at a time, one chocolate bar at a time, the work of that morning is gradually undone by the customers it was done for. Coffee canisters fall by a few grams with every drink. Cup stacks become shorter. Cooler bottles become lighter. The sales data quietly records all of it and, before long, today's consumption will become tomorrow's pick list.

And by the following morning, the evidence has vanished once more. The cardboard has gone, the trolley has gone and so has the person who stood here yesterday checking dates, cleaning spouts and filling spirals. There is simply a machine in the corner of the room, clean, ordered and full.

Nobody arriving for the early shift saw any of it happen. To them, nothing has happened.

That is the trick.

A few minutes later somebody arrives, still wearing a coat, carrying a phone and thinking about whatever the day has waiting for them. They don't inspect the spirals or wonder whether the cups came from the same manufacturing batch. They don't consider the route that brought the coffee here, the stock figures that predicted it would be needed or the person who was awake several hours before them making sure it was.

Why would they?

They press the screen.

Somewhere inside the machine, a cup separates from the stack and drops into place. The brewer closes, hot water meets coffee and, a few seconds later, the first drink of the morning appears beneath the dispense head.

The customer takes it and walks away.

To anyone arriving that morning, the machine has performed the same trick it performs every day.

Of course, it didn't fill itself. It just looked as though it did.

The customer takes a sip of coffee.

It's exactly as they expected.