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Commerce · IV.08 · MMXXVI · daylight

La Bourse  /  Volume IV  /  Nº IV.08  /  Workbook — the student

A woman seen from behind, reading on a cushioned bench that looks out over a lotus pond toward a garden pavilion.
Plate IV.08 · Workbook — the studentThe Bench at Four O'Clock.Repair is the only branch of production where the labour is visible, which is exactly why it is the only branch of production that is priced honestly.

WORKBOOK — THE STUDENT

Chapter IV.08 · The Repair Economy

For the person studying this alone, or in a seminar, with no firm to run and no budget to spend. You are the best-placed reader this chapter has, because the instrument works on objects you already own and the data you need is in your own kitchen.

WHY THIS WORKBOOK IS DIFFERENT

The executive reading this chapter will apply it to a product line. You are going to apply it to a life, and the transfer is exact rather than metaphorical, because the repair decision is one of the few pieces of corporate finance that ordinary people make several times a year with their own money.

There is a second reason this is the right chapter for you. Repair is a skill before it is an economics, and skills acquired young compound for decades. The person who can open a laptop, diagnose a fault and put it back together will spend a working life with a structurally lower cost of living and an option on a trade. That is not a small thing to pick up in a term.

And there is a third, which is the sharpest. The chapter's finding is that repair pays where labour is cheap. Your labour is, right now, cheap to you — your own hour has no charge-out rate attached and no overhead multiple on top of it. The threshold rate w* that defeats a professional shop does not defeat you. For the next few years you can economically repair things that no business on earth could afford to repair on your behalf, and that arbitrage closes the day somebody starts paying you properly.

Use it while you have it.

PART ONE — DISCOVERY

Days 1–30: find what is already being repaired

Exercise 1.1 — The household inventory (90 minutes)

List every durable object in your home worth more than a week's food. For each, write four columns:

ObjectWhat it cost new (C_n)How long it should last (L_n)Has it ever been repaired?

Do not estimate from memory for C_n. Look up the current price of the nearest equivalent, because that is the number the decision actually turns on: you are not comparing against what you paid, you are comparing against what a replacement costs today.

Then mark the ones that have been repaired, and find out by whom. In most households the answer is one person, usually not the owner, and often a relative. That person is your first appreciative interview.

Exercise 1.2 — The appreciative interview (45 minutes, with another person)

Find somebody who repairs things — a bike mechanic, a family member, a phone shop, a volunteer at a Repair Café. There are over 2,500 Repair Cafés worldwide and one is probably nearer than you think. Ask exactly this:

"Tell me about a repair that went unusually well. Not the hardest one — the one that surprised you. How did you know what was wrong? How long did the knowing take, compared with the fixing?"

Take notes on the diagnosis, not on the fix. Almost everyone who does this work will tell you the same thing in different words: the hands are the easy part. That is the h term in the instrument, and it is where the value is.

Exercise 1.3 — Sit in on community repair (one session)

Attend one community repair event. Do not bring anything to be fixed; bring a notebook. Record every item that arrives, what was wrong, and whether it left working.

The published benchmark is a fix rate of 53.0 percent across 208,491 logged attempts by 1,158 groups at 19,986 events in 31 countries — about 10.43 attempts per event. Compare your session honestly against that. If yours was better, work out why; if worse, work out why. You have just run a measurement against a national data set using a notebook, which is the whole method of this book at the smallest available scale.

PART TWO — THE ARITHMETIC

Days 31–50: compute before you argue

Exercise 2.1 — Reproduce the chapter's three cases (two hours)

Do not take the numbers on trust. Open lib/verify/IV_08.py, read it, then compute these independently by hand or in a spreadsheet.

  1. The washing machine. A = 0.90 × 5 × 400 / 11. Confirm £163.64, then w* = (163.64 − 45 − 60) / 1.20 = £48.86 an hour. Then confirm the ratio at £45.00 an hour is 0.9717 and at £70.00 an hour is 1.1550.
  2. The smartphone. Confirm A = $474.41 and w* = $452.54 an hour, and that at a $132.00 bench rate R = 0.4932.
  3. The kettle. Confirm A = €8.00 and w* = €4.00 an hour.

Then do the part that matters most: find one input you think is wrong and replace it. The residual lives, hours, callouts, first-time-fix rates and part prices are declared assumptions, not measurements. Get a real quote for a real repair on a real machine and re-run the instrument with your number. Bring the difference to your seminar.

Exercise 2.2 — Your own threshold table (90 minutes)

Take five objects from Exercise 1.1 and compute w* for the most likely failure of each. You will have to estimate p, h, k, q and L_r; write each estimate down and mark how confident you are.

Then rank them. You now hold something almost nobody has: a personal repair policy that is a table rather than a mood. Above the line, repair. Below it, replace and stop feeling bad about it.

Exercise 2.3 — The arbitrage on your own hour (45 minutes)

For your top-ranked object, recompute w with k = 0 — you are carrying it yourself — and with h doubled, because you are learning. Then ask the honest question: at what value of my own hour does this still make sense?*

Most students find the answer is a surprisingly high number, and that is the finding. A repair a professional cannot afford to do is often one you can, and the reason is not thrift. It is that you have no overhead multiple. The United States publishes both sides of that multiple: an average shop rate of $132.00 an hour against a median technician wage of $24.34, a factor of 5.4232. You are carrying none of it.

Exercise 2.4 — Find the honest negative (30 minutes)

The chapter contains three. Locate each — the kettle, the implied wage of £9.01 against a National Living Wage of £12.71, and the 22.5 percent uptake of a correctly sized French subsidy — and write in your own words why each is included.

Then do it to yourself. Take a position you hold about how things should be made and write the strongest honest negative against it. If you cannot write it, you do not yet understand your own position well enough to defend it. That is not a criticism. It is the assignment.

PART THREE — DREAM AND DESIGN

Days 51–70: build the apparatus

Exercise 3.1 — The present-tense description (60 minutes)

Write five hundred words describing a world in which the repair economy works, in the present tense, as description rather than prophecy.

Constraints, and they are the whole exercise:

The second constraint defeats most people. If you cannot name the term, you have written a wish rather than a design.

Exercise 3.2 — Repair one thing, properly (a fortnight)

Choose one object and repair it, with the whole apparatus around it.

  1. Baseline. Photograph it, write down the symptom precisely, and record your hypothesis before you open it. This is the signed baseline of Chapter I.01 in its smallest honest form.
  2. Diagnosis. Time it. Write down when you knew what was wrong, separately from when it was fixed. That split is h, and you will never see it again unless you record it now.
  3. The fix. Lay the fasteners out in the order they came out. There is a reason every workshop in the world does this and you will discover it.
  4. The result. Working or not. Record failures with the same care as successes — the published community fix rate is 53.0 percent, so a failure puts you in the majority and in the data.
  5. The arithmetic, after the fact. Compute what the repair actually cost you in parts and hours, and what w* would have had to be for a shop to do it.

Exercise 3.3 — Log it publicly (20 minutes)

Enter the repair into an open community repair log. It takes minutes, and it adds one line to the only public data set that records what actually breaks, by brand and by component — the set that grew from 208,491 records to 305,649, 46.6 percent in a year, entirely from people doing exactly this.

This is the cheapest contribution to a commons available anywhere in this book. It costs you nothing you were not already spending and it is permanent.

PART FOUR — DESTINY AND DELIGHT

Days 71–90: make it hold, and enjoy it

Exercise 4.1 — The three conditions (30 minutes)

A repair practice sustains on the same three things a repair business does. Translate each into your own life and write your answers.

Exercise 4.2 — Learn one diagnostic skill to fluency (the term)

Pick one: a multimeter, a bicycle drivetrain, a sewing machine, a laptop teardown, a car's onboard diagnostics. One. Take it to the point where the diagnosis is fast rather than the fix being possible.

The reason is in the arithmetic. Every lever in the instrument except residual life is something a skilled person moves with their hands and their memory, and h is the one you own outright.

Exercise 4.3 — Delight, on purpose (ongoing)

The pleasure of repair is diagnosis, and it is reliable. Notice the ten minutes between it does not work and I know why, and notice the small internal click when the symptom and the mechanism snap together.

Then set the conditions for it deliberately: good light, a tray, a flat surface, an hour nobody will interrupt. A practice with no pleasure in it has a half-life, and this one has more available pleasure per hour than almost anything else you can do with your hands.

THE TERM PROJECT

One category, carried the whole way

Choose a single product category — student laptops, bicycles, phones, kettles, printers, headphones — and produce a repair economics report on it.

Deliverables.

  1. The market memo (eight hundred words). What the category costs new, how long it lasts, what fails, who repairs it and at what price. At least three real quotes from real repairers, obtained by asking.
  2. The threshold table (one page). w* computed for the three most common failures, every input declared, every assumption marked as an assumption.
  3. The policy page (six hundred words). Which of the four levers the law in your jurisdiction actually touches. Be specific: name the instrument, the date, and the scope limit.
  4. The repair (done, not described). One unit of the category, repaired, with the record from Exercise 3.2.
  5. The honest negative (four hundred words). The condition under which repair in this category loses, stated as strongly as you can make it.
  6. The reflection (six hundred words). What you expected, what the arithmetic said, and what the gap tells you about how you were reasoning before.

How it is assessed. Not on whether repair won. On whether the arithmetic was honest, whether a reader could reproduce your numbers from your declared inputs, and whether you reported a result that did not flatter your prior.

A category where you concluded repair loses, measured cleanly, is a first-class piece of work. A category where repair won and the inputs cannot be reconstructed is not.

SELF-ASSESSMENT

Score yourself honestly. This is for you.

Not yetBeginningSolidFluent
I can write the repair ratio from memory and define every term
I can compute a threshold rate for a product I have never seen
I can rank the four levers and say why residual life dominates
I separate diagnosis time from fix time when I record work
I can state the distributional negative without flinching from it
I know one jurisdiction's repair law by scope and date, not by slogan
I log what I repair somewhere other people can read
I decline the repairs the arithmetic refuses

The two that matter most are the fifth and the eighth. Everything above them can be learned in an afternoon. Those two are dispositions, and dispositions take a term.

CARRYING IT FORWARD

At the end of this you will hold four things that almost nobody your age holds:

And one more, which is the reason this chapter sits in a volume about production. You will have looked closely at the place where labour, price and duration meet — and found that the environmental argument and the economic argument are the same argument wearing different clothes, and that the seam between them is a wage. Most people never find that seam. You will be able to point at it, in a table, with the workings shown.

APPRECIATIVE QUESTIONS FOR YOUR SEMINAR

  1. Which of us has repaired something this term, and what did the diagnosis feel like at the moment it arrived?
  2. Which product category in our own lives has the highest threshold rate, and how would we prove it to somebody who disagreed?
  3. What is already working in how knowledge about fixing things moves between people here — and what would it take to have more of that?
  4. If everyone in this room logged one repair a month for a year, what would we collectively know that nobody currently knows?