Haute Lumière
Commerce · IV.10 · MMXXVI · daylight
For the person inside a gainshare, where what you are paid depends on what can be proven. This chapter is about the cost of proof — which means it is about the cost of your own claim, and about the one asset in the whole system that you personally can create.
A gainshare pays you a share of a measured improvement. Every word in that sentence is load-bearing, and this chapter is about the third one.
If the improvement cannot be measured at a cost less than the improvement is worth, there is no gain to share — not because the improvement is not real, but because nobody will pay for something whose proof costs more than the thing. That ratio has a name in this chapter:
κ = cost of proving the gain ÷ value of the gain
Your entire economic position inside a gainshare is a function of κ on the things you do. A κ of 163.826 means your work is genuinely valuable and entirely unclaimable. A κ of 0.079 means the same work is a line on a ledger with your name beside it.
So the highest-leverage thing you can do in a gainshare is not to work harder on the gain. It is to lower κ on the gain you are already producing. That is what this workbook is for, and it is almost never what people are told.
Exercise 1.1 — List what you improve that nobody measures
Two columns, twenty minutes, no editing. Left: things that are measurably better because of you. Right: things that are better because of you and are not measured.
The right-hand column is longer. It always is. Every entry on it is a gain currently sitting at κ = infinity, because the numerator exists and the denominator has never been computed.
Exercise 1.2 — For the top three, ask the four questions
You are not being asked to do the science. You are being asked to write the sentence "this would take N observations over T months at roughly $C, against a gain of $V." Almost nobody in your organisation can write that sentence about anything, and the person who can is the person whose claims get paid.
Exercise 1.3 — Find the relocation assets nobody is using
Where does your organisation already return to exactly the same point to take a reading? A fixed sensor, a monthly report run on identical parameters, a recurring survey with a stable sample, a calibration standard.
Every one of those is a paired-measurement asset sitting idle. Attaching your gain to an existing repeated measurement costs you nothing and takes ρ from roughly 0.50 to roughly 0.90 — which, in the chapter's soil case, takes the observations needed from 224 to 45.
Output: your unmeasured gains list, three with the four questions answered, and every existing repeated measurement in your reach.
Exercise 2.1 — Learn the two formulas that decide everything
how many: n = k σ_d² / Δ² with σ_d² = 2σ²(1 − ρ)
how often: T = MDD ÷ rate with MDD = (z₀.₉₇₅ + z₀.₈₀)·√(σ_d²/n)
In the chapter's case: σ = 8.00, Δ = 1.50, ρ = 0.90 gives 45 observations; 45 observations gives MDD 1.4942 and an interval of 4.98 years.
Apply both to your own gain. If the interval your arithmetic produces is longer than your gainshare period, you have found something worth raising today, because the scheme is promising to pay on a measurement it cannot make in time.
Exercise 2.2 — Build your own cost stack
Three lines, in your own currency:
Then: total = per claim + events × (per event + n × per observation). The chapter's paired claim is $25,950.00 and the unpaired equivalent is $70,170.00.
Exercise 2.3 — Compute your κ, honestly, including the bad answer
Divide. If κ is above one, the gain you are producing cannot be claimed by you alone, and saying so plainly is worth more to you than an optimistic number that collapses at the first review.
Then compute what would change it. The chapter's three levers are yours too:
Exercise 2.4 — Know the floor, because it protects you
κ_floor = c_ha ÷ V_ha = 24.75 ÷ 79.20 = 0.312 at $20/t
Aggregation spreads fixed cost and does not touch the floor. If somebody tells you the scheme will get to a 10 percent verification cost purely by growing, they have either not computed the marginal term or are using a proxy they have not disclosed. Either way you are entitled to ask which.
Output: your gain, its design, its cost stack, its κ, and the one structure that moves it.
Exercise 3.1 — Install your stake
This is the chapter's central move and it translates exactly. The single cheapest thing you can do to raise the value of your claim is to fix the point of observation before you start — the same report, the same parameters, the same population, the same cohort, the same date in the month, written down where somebody else can find it.
In the chapter's arithmetic, $135.00 of markers avoids $44,220.00 of measurement — a return of 327.6 times. Your equivalent costs an afternoon and is worth the same multiple, for the same reason: it buys ρ.
Do it before the gain starts accruing. A baseline established afterwards is not a baseline; it is a future dispute, and in a dispute about a gainshare you are not the party with the records.
Exercise 3.2 — Write your claim the way a verifier reads it
Six lines, no more:
Exercise 3.3 — Find your pool
If κ on your own claim is above 0.25, find the colleagues whose gains share your fixed cost — same method, same verifier, same measurement window — and propose one claim with an allocation rule.
The chapter's threshold in its own units: H\ = 1,303.1 hectares at $20 a tonne, which is 652 holdings of two hectares. The translation for you is: how many colleagues' claims share my fixed cost, and is that enough?*
Exercise 4.1 — Ask for the four things, by name
These are reasonable, cheap, and they protect the scheme as much as they protect you.
Exercise 4.2 — Keep your own register
Whatever else is true of a gainshare, the party holding the records holds the argument. This is not adversarial and it is not distrust; it is the same reason a surveyor keeps field notes and a laboratory keeps raw traces. A scheme that is being run well will be glad you have them, because your register is a second route to the same answer and a second route is how errors get found before they get published.
Keep baselines, dates, methods, raw readings, and who agreed what and when. It costs almost nothing and it is the only asset in a gainshare that is genuinely yours.
Exercise 4.3 — The delight
Come back to your fixed point at the end of the period and read it. The interval either straddles zero or it does not. Either way you built something that could have proven you wrong — which is the rarest and most valuable position anybody in a gainshare can occupy, because it is the only one that gets believed twice.
| ✓ | |
|---|---|
| I know what my gain is measured against, and who holds the baseline | |
| I know the method, and it was written down before the period started | |
| I know how many observations the design uses and why that number | |
| I know the interval, and it is longer than the noise requires | |
| I know the total verification cost of my claim | |
| I know my κ and which band it is in | |
| I know the deduction applied to me and whether it differentiates | |
| I know the calibration fraction and whether it is covenanted | |
| I know what gets published if the result is null | |
| I keep my own register, independent of the scheme's |
Any unticked line is a question, not a grievance. Ask it in the same breath as the answer you would accept.
"I've costed the verification on my claim. At the current design it's about [$C] against a gain of [$V], so κ is [n]. That's above the band where it's worth anybody's money to prove.
Three things move it, and I've checked all three. Pooling my claim with [colleagues] shares the fixed cost and takes it to about [n₂]. Running it on a calibrated model with a sampled fraction takes it to about [n₃]. A proxy takes it lower still, at a wider deduction I'd accept.
I'd like the second one, I've written the design, and I need the baseline agreed before the period starts. Here's the page."
No grievance, no ask for trust, one number and three routes. That is the whole technique and it works because it hands the other person a decision rather than a problem.
Nothing in this chapter is really about soil. The arithmetic is the same wherever a gain is slow, a baseline is noisy and somebody has to pay for proof.
A retention gain. Voluntary turnover is noisy at team scale and the effect you are claiming is small against it. Same problem, same fix: fix the cohort definition in advance, use the same report parameters every quarter, and pool across teams so one analysis serves several claims.
A quality or yield gain. Here ρ is usually already high, because the production line is the fixed point — the measurement infrastructure was built for another reason and is available to you free. This is the cheapest kind of gain to claim and it is systematically under-claimed for exactly that reason: nobody thinks to look at what is already being logged.
A customer-outcome gain. The scatter is enormous and the effect is real, which is the worst combination and the one where κ is highest. Almost always this needs pooling — across cohorts, across sites, across quarters — before it can be claimed at all.
A cost-avoidance gain. The hardest, because the counterfactual is unobservable by definition and there is no fixed point to return to. The honest move is usually to claim the practice rather than the outcome, at a price reflecting the uncertainty, and to say so. That is not a lesser claim. It is a correctly labelled one, and correctly labelled claims are the ones that survive the second review.
The general rule, worth carrying out of this chapter entirely: the value of a gain to you is not what it is worth. It is what it is worth minus what it costs to prove, and the second term is the one almost nobody works on. Work on it. It is uncrowded ground and the returns are extraordinary — 327.6 times, in the one case this chapter computes all the way through.