The Arithmetic on the Wall
— an excerpt —
This is not a companion essay. It is a map of the systems beneath the story.
How to Read This
What follows is not background.
It is not context.
It is the operating logic of the story — the systems that determine who moves, who is paid, who survives, and who disappears without record.
If you understand this map, you will understand how events are made inevitable.
If you do not, you will still feel it.
Empires are not held together by flags.
They are held together by roads cut into mountain passes, by ledgers balanced in distant offices, by harvest seasons timed to foreign markets, and by the quiet understanding — never written down, never spoken aloud — that some people will always eat differently than others.
The Route
Southampton to Aden. Aden to Massawa. Massawa overland through the Tigrayan plateau, where the air thins and the mules pick their way along cliff paths wide enough for one animal at a time. Down into the Gibe River Gorge — the ropes groaning under the weight of carriages lowered by hand over a descent steep enough to kill anyone who loses their grip. Then south through highland forest where the canopy closes overhead, to the Kaffa region, where coffee has grown wild since before anyone called it coffee.
Eight years later, the return route runs in the opposite direction and at a different speed. Over a mountain ridge in the dark. Rope-assisted. Hand-over-hand. Through the Afar Depression — salt flats, heat haze, thorn scrub that scratches at boots and flanks — to a harbour town where a ship called the Talisman is waiting.
Between these two routes: a civil war, a burning house, and four dead men in doorways who bought the family thirty seconds each.
The Coffee
Wild coffee grows in the Kaffa highlands at altitudes between 1,500 and 2,100 metres. The trees are ancient, gnarled, heavy with cherries that ripen according to rainfall, altitude, and the particular volcanic composition of the soil.
For centuries, local farmers harvested these cherries and sold them to Arab traders who came up from the coast with camels. The trade was steady. It was controlled by the people who lived on the land.
Then Europeans arrived with surveys and land grants signed in distant capitals. They built processing sheds with sorting tables and drying beds — long wooden racks where parchment-covered beans dried precisely beneath the sun. They posted the London auction results on the shed wall, printed in English, for the owner to admire.
Twelve shillings a pound. Premium grade.
The men who picked it earned three birr a week. The same as last year. The same as the year before.
The Distance
Half a mile separates the main house from the village compound. The house has glass windows, reinforced doors, a kitchen with a cast-iron stove, and a veranda where the owner drinks T’ej and watches the fields. The village has woven bamboo huts with latches on the doors and roofs that do not leak.
The overseer walks between both every morning. His skin absorbs the early light. The carved wooden bead on his wrist belonged to his father, and his father’s father, and the men before them who walked this land when it answered to no one’s ledger.
He has kept accounts since the first season. They are more complete than the owner’s.
He has never said this aloud. He has never needed to. The numbers speak for themselves, and the numbers are on the wall.
The Names
A stone arena in the capital. Tall pillars rising toward a ceiling that depicts the unbroken imperial line of succession. The benches hold warlords in lion-mane headdresses beside nomadic horsemen in road-worn leather, desert elders beside black-robed priests whose authority predates every dynasty in the room.
An emperor has died. A successor must be chosen. The air inside is thick with frankincense and the particular tension of men who carry swords and disagree about the future.
They reach consensus by morning.
By evening, three of them have met in a room with a single torch and planned the assassinations that will undo everything the morning agreed to. The killings will be disguised as bandit raids. The roads will run with blood before the capital understands what has happened.
The warlord who orchestrated this sits rigid in his tent, a map of the plantation spread before him. His finger traces the route from camp to house. The nail leaves a faint white line on the paper.
"Burn it," he says. "Bring the foreigners alive."
A pause.
"I want to kill them myself."
Villages alter their planting patterns based on rumours of his movement. Entire communities reroute their travel, their trade, their marriage alliances. His name is spoken the way weather is spoken — not with anger, but with the flat recognition that certain forces do not negotiate.
The Household
In a London gentleman’s club, a chair is designed to discourage departure. The scotch is a Macallan — offensively expensive, a luxury the man holding it cannot afford but will never decline. His stipend is terminated. His solicitor hands him a leather folder full of contracts for land he has never seen, in a country he cannot locate on a map.
His wife is already packing. Not the obvious preparations — the trunks, the linens, the servants’ instructions. The private ones. The ones her husband does not know about and will not know about until the money runs out, and she is the only person in the household who has any.
Eight years later, this same woman ties a rope to a rock face in the dark using a knot she learns at seventeen in a barracks, and nine people climb it, and all nine survive, and she sits at the top with her chest heaving and her arms trembling and says nothing, because saying something would imply she expects gratitude, and she has never expected gratitude for keeping people alive. She considers it a job specification.
The Ground Hornbills
A boy tells a girl about the ground hornbills.
They are large birds — black-feathered, red-throated, territorial. They walk the highland ridges in pairs, watching. They have rules the boy has learned from years of observation: where they nest, how they hunt, what sounds they make when a predator approaches, what sounds they make when the predator leaves.
The girl listens carefully. She is seven. He is seven. They are sitting behind a waterfall in a place they will later call a fortress, sharing a game played with stones in shallow pits, and neither of them understands what it will eventually cost.
Not because of what it is.
Because of what it costs.
His father’s land was taken. Her father’s contract sits on that land. He steadies the ox yoke. She rides the horse. He earns a work card at ten. She learns French deportment at twelve. He sharpens a hoe by moonlight. She hides an iron box on the top shelf of her closet and tells no one.
Seven years later, a column of refugees moves north through the dark, and they walk side by side without speaking, because everything that needed saying was said behind a waterfall when they were too young to know it mattered.
The ground hornbills watched them then.
The ground hornbills are not watching now.
What the Wall Does Not Measure
A woman stands at a kitchen window in a harbour town, looking at a ship she is supposed to board in the morning. Behind her, the broth she made from dried meat and the last of the herbs is cooling on a stove that is not hers, in a country that is not hers, at the end of a road she did not choose.
She touches her chest. Beneath her shirt, a piece of folded paper. Handwriting she has carried for eight years. Ink faded. Paper soft as cloth.
Tomorrow the ship sails west.
The man who wrote those words is somewhere east. In the hills. If he is still alive.
She will board the ship. Or she will not.
The arithmetic on the wall has no column for this.
What Coffee Demands — a trilogy set in composite 1880s–1890s Abyssinia. Book 1: Hold the Earth. Book 2: The Crown and the Bean. Book 3: The Price.