Haute Lumière
Commerce · I.02 · MMXXVI · daylight
For the person studying this alone, or in a seminar, with no organisation to inventory yet. You have one anyway. It is the set of things you already do well and have never once written down, and this term you are going to find them, cost them, name them and give them an owner.
The chapter is addressed to somebody with a management pack and an auditor. You have neither, and you may conclude that an inventory of counterfactual value is something you do later, once there is a firm around you to inventory.
That conclusion is wrong in a way worth being precise about. The chapter is not about accounting. It is about a specific failure of attention — the one where a thing works reliably for long enough that it becomes invisible, and invisible things do not get funded, defended or reproduced. That failure is not a property of firms. It is a property of anything that keeps working.
You have practices that are producing disproportionate value in your life right now and that you cannot describe, because you have never had to. You have a way of reading, a way of recovering from a bad week, a friendship you maintain without noticing, a habit of asking one particular question in seminars. When somebody asks how you do it, you say I don't know, I've always done that — which is the exact sentence the chapter exists to interrogate.
So you will do what the executive does, on a system you fully control. You have one substantial advantage over them: nobody has to give you permission to start recording something.
Exercise 1.1 — The six-place sweep, translated (90 minutes)
The chapter names six places. Here they are, in a life rather than a firm.
| In a firm | In yours |
|---|---|
| The maintenance programme | What do you keep in good repair — a bicycle, a body, a piece of software, a friendship — by doing something small and regular that nobody sees? |
| The retention anomaly | Which of your commitments has a strangely low drop-out rate? Which group do you keep turning up to? |
| The protected supplier | Which relationship do you never reconsider, and what do you get from it that is not in the obvious exchange? |
| The diverted waste stream | What do you reuse that other people discard — notes, drafts, a commute, the dead twenty minutes before a lecture? |
| The redirected spend | Where do your money and your hours actually land, and how much of that lands somewhere you would defend? |
| The decision you declined | What have you refused in the last three years that turned out to be right? |
Write six candidates. Do not evaluate them yet. You need one. Six is so that you have a choice, and so that the weak ones make the strong one obvious.
Exercise 1.2 — The sixth place, taken seriously (45 minutes)
The sixth is the one people skip, and it is the one with the most information in it. Take a full page for it.
Write down every substantial thing you have said no to in the last three years. The course you dropped. The job you did not apply for. The house share you left. The project you talked a group out of.
Then, beside each one, write what you could see that the proposal could not. Not whether you were right — what you were looking at. Most of these will turn out to have been a piece of information you held and could not articulate at the time: a person you did not trust, a workload you knew the real size of, a commitment that would have cost something you needed.
That is tacit knowledge, and this exercise is the only reliable way most people ever get to read their own. Polanyi's line — that we know more than we can tell — is not consolation. It is an instruction to go looking in the places where the knowing left a trace, and a refusal is a trace.
Exercise 1.3 — The appreciative interview, about you (45 minutes, with another person)
Ask someone who knows your work — a supervisor, a flatmate, a colleague from a job, a teammate — exactly this, and do not soften it:
"What do I do that you think is unusual? Not the thing I'm best at — the thing I do without seeming to notice I'm doing it. What does it look like from where you sit?"
Then stay quiet and write. Do not explain, do not deflect, do not improve their answer. You are collecting observations of a practice from outside it, which is the only vantage from which an invisible practice is visible at all.
Do this three times with three different people. Where two of them independently name the same thing, you have found your inventory's first entry.
Exercise 2.1 — Reproduce the chapter's figures (2 hours)
Do not take a number on trust. Open lib/verify/I_02.py, read it, then compute these independently — by hand, in a spreadsheet, in whatever language you use.
400,000 − 400,000/(1.09)³. Confirm £91,127 once, £11,391 a year over the cycle — and then notice that the £22,000 programme does not clear against it.Number four is the exercise. The first three are arithmetic; the fourth is the discovery that the assumption, not the arithmetic, decided the answer. Two competent people using the same four operations produced £28,000 and −£10,609, and the difference between them is entirely a belief about whether a press was going to be replaced.
Then do the thing that matters most: find one figure in this chapter you can check against an outside source, and check it. Bring any discrepancy to your seminar. This edition wants to be checked.
Exercise 2.2 — Cost your own finding, twice (90 minutes)
Take the candidate from Exercise 1.3 and write the counterfactual expression for it:
V = (C_alternative − C_actual) + R_captured + O_option
C_actual — what the practice costs you. Hours, money, attention. Be exact.C_alternative — what you would be spending without it. This is the term you will be tempted to inflate. Write the assumption beside the number.R_captured — what it has visibly produced. A grade, a contact, a piece of work, an income.O_option — what it keeps open. Name it, do not monetise it. One sentence.Now do it again, conservatively, assuming the least flattering version of your counterfactual is true. Put the two side by side on one page with the assumption written next to each number.
You now hold the thing the chapter says produces credibility: the conservative case, volunteered by the person who benefits from the optimistic one. This is a transferable social skill and it is worth more than the arithmetic.
Exercise 2.3 — The trend test (30 minutes, then four weeks)
For your chosen practice, name the stock it runs on and decide how you would know which way it is going.
R(t+1) > R(t) regeneration — the underlying thing is improving
R(t+1) = R(t) maintenance — honest, and worth costing
R(t+1) < R(t) liquidation — a cost being reported as a saving
Then apply it to yourself with some nerve. Some of what you are proud of is depletion wearing the costume of thrift. A study pattern that produces good marks by drawing down sleep is not a regenerative practice; it is a stock being liquidated and reported as a result. The marks are real. So is the draw.
Write down the metric that would settle it — hours slept, sessions attended, pages of primary source, a friendship you could name the last three contacts of — and start recording it. Change nothing for four weeks.
Exercise 2.4 — Find your natural experiment (45 minutes)
Before you model anything, ask whether you already have a control group. Two modules taught differently. Three terms, one of which you did something in. A flat before and after a housemate left. Friends who did the thing and friends who did not.
An observed comparison is much harder to argue away than a modelled one, and finding one costs an afternoon rather than a study. Name the confounds yourself — a comparison with its confounds stated is credible; one without them will be taken apart by the first person who wants it taken apart.
Exercise 3.1 — The present-tense description (60 minutes)
Write 400 words describing, in the present tense, a version of your life three years from now in which everything valuable you do is written down.
Constraints:
The third constraint is the one that does the work. A dream with nothing retired in it is a trophy cabinet, and the chapter is explicit that a trophy cabinet is how an inventory rots.
Exercise 3.2 — Build What I Already Do Well (2 hours)
Two pages. This is the central artifact of the workbook and you will keep it for years.
| Column | What goes in it |
|---|---|
| Practice | A plain name you could say out loud without explaining |
| Basis | The counterfactual, in one sentence |
| Conservative value | Hours, money or a clearly stated effect |
| Trend | Rising, flat or falling — with the metric named |
| Second owner | Who would notice within a month if you stopped |
| Last verified | A date |
Five to eight lines. No more. The discipline is the point: an inventory that lists everything is a diary, and a diary does not get read.
Naming is not decoration. A practice with no name cannot be referred to, and a practice that cannot be referred to cannot be defended when a busy term proposes to cut it. The Sunday hour. The walk before the seminar. The Kowalski email. Give each one a name a friend would recognise.
Exercise 3.3 — Tell one owner what it is worth (one conversation)
Somebody in your life is running a practice that produces value for you and has never been told. A tutor who reads drafts faster than anyone expects. A friend who organises the thing that keeps a group together. A parent. A technician.
Go and tell them what it is worth — with the number, and with the specifics of what you watched them do.
You will almost certainly be the first person who has ever asked. That is the whole of Delight in this chapter, and it is available to a student on a Tuesday afternoon for the cost of one conversation. Bring a notebook. Write it down while they talk. The writing-down is the gift.
Exercise 4.1 — Guard against the three rots (30 minutes)
The chapter names three ways an inventory rots. Write your countermeasure for each, in your own words, in your own document:
Exercise 4.2 — Ask the transfer question (45 minutes)
For your strongest finding, ask the chapter's highest-value question: where else does this apply?
Write the answer even if you do nothing about it this year. If the practice that keeps one commitment alive would keep three alive, that is the arithmetic the chapter says is the strongest number in the volume — value at one site, times the number of comparable sites, times how much of it travels, over the cost of writing it down.
Do the sum on your own life. The cost of documenting is an afternoon. The denominator is small enough that almost anything clears.
Exercise 4.3 — Delight, deliberately (ongoing)
Choose one element of your inventory practice and make it genuinely pleasant — the particular hour, the café, the notebook, the pen. Delight is not the reward for keeping records. It is the reason the records still exist in March.
Choose a single system you have real access to — a student society, a part-time job, a household, a sports team, a volunteer group, a family business — and run the full inventory on it.
Deliverables.
How it is assessed. Not on the size of the number. On whether a reader could reproduce your arithmetic, whether both cases are shown, and whether you reported at least one finding that did not flatter your own thesis.
An inventory containing one honest liquidation is a first-class piece of work. An inventory of six triumphs is a marketing document, and it will be marked as one.
Score yourself honestly. This is for you.
| Not yet | Beginning | Solid | Fluent | |
|---|---|---|---|---|
| I can write the counterfactual expression and say which term has a line | ||||
| I can hear "we've always done that" as a finding rather than an answer | ||||
| I cost things twice, and volunteer the conservative number first | ||||
| I ask for the trend, not the level | ||||
| I can tell regeneration from depletion in my own habits | ||||
| I look for a natural experiment before I build a model | ||||
| I name a practice so that a person could say it out loud | ||||
| I tell people what their quiet work is worth |
The two that matter most are the fifth and the eighth. The fifth is the one that keeps you honest about yourself; the eighth is the one that makes other people willing to tell you how anything actually works.
You will not have a management pack for some years. What you will have, if you do this properly, is:
That last one is worth more than it sounds. The person who can say what they were seeing when they refused something is the person who can be trusted with the next decision, and you can build that capability before you have any authority at all.