Haute Lumière
Commerce · I.07 · MMXXVI · daylight
For the person working inside a gainshare arrangement — where a defined share of verified improvement returns to the people who created it. This chapter is about how a practice spreads. Inside a gainshare, how a practice spreads is how the pool grows, which means the diffusion arithmetic is not background material. It is your pay.
A gainshare pays on verified improvement against a baseline. Improvement comes from practices. Practices only reach the people who have to perform them by complex contagion — which means the size of your pool is determined, quite directly, by the shape of the network the improvement has to cross.
Put the two facts together and something follows that nobody will tell you in an induction.
Inside a gainshare, introducing two colleagues to each other is a compensated act.
The person who spreads a working method across three teams has raised the pool for everybody, including themselves, and has done it with an asset — their relationships — that costs no capital and appears on no budget. A gainshare is the one arrangement in commercial life that pays for network engineering, and almost nobody in one realises it.
The rest of this workbook is how to do that deliberately, how to make it countable, and what to ask for.
Exercise 1.1 — Find the practice that has stopped at one team (one week)
Somewhere in your organisation a method exists that works, is known to work, and has spread to exactly one team. That is the highest-value object you will find this year, and it is common enough that you should expect to find two or three.
Look in these places:
| Where | What you are looking for |
|---|---|
| The team with the anomalously good numbers | What are they doing that nobody wrote down? |
| A workaround everybody in one shift uses | It solved something real or it would have died |
| A tool somebody built for themselves | Built because the official one did not fit |
| A checklist on a wall | Somebody paid attention once and it stuck |
| The handover that never goes wrong | Because two specific people built a habit |
For each, write one line: this is worth £___ a period if it ran everywhere, and it currently runs in ___ of ___ teams.
You do not need the figure to be right. You need it to exist, because a number with a stated assumption starts a conversation and an opinion does not.
Exercise 1.2 — Map the network the practice has to cross (half a day)
List the teams it would have to reach. For each, write who in that team would have to adopt it first, and then answer one question about each of those people:
How many other people doing it do they have to see — and can they see two?
Almost always the answer is no, and the reason is structural rather than attitudinal: the teams do not overlap. The practice is not stuck because people are resistant. It is stuck because nobody in team B can see two people in team A. That is a solvable problem and it is solvable by you.
Exercise 1.3 — The appreciative team conversation (45 minutes)
Run this with your team, in these words:
"Think of a way of working we picked up from another team. Who did we see doing it, and how many of them were there before we tried it?"
Listen for the number. You will hear two or a couple of them far more often than one, and people will say it without noticing what they have said. Write down the names. You have just mapped the reinforcement paths that already work in this building, and they are the ones to use next time.
Exercise 2.1 — Value the diffusion, not the practice (90 minutes)
The practice has a per-team value. The spread has a different value, and it is the one your pool is paid on.
pool contribution = per-team improvement
x teams reached
x periods before the baseline resets
x share %
Run it twice: once on the current trajectory, once if the practice reaches every team within two periods. The difference between those two numbers is what your network work is worth, and it is normally larger than the improvement itself — because the improvement is fixed and the multiplier is not.
Then check the third term, which is the one people forget. If your baseline resets annually, a practice that takes eighteen months to spread pays you for six months of one year and nothing thereafter. Baseline ratcheting turns diffusion work into unpaid labour, and it does it silently. Find out what your scheme does. If nobody can tell you, that is the finding and it is worth more than this month's statement.
Exercise 2.2 — The hazard, for your own recruiting (45 minutes)
The Bass model gives the pull on the next undecided person as (p + qF)(1 − F). Using the meta-analytic means p = 0.03 and q = 0.38, in a team of twelve:
| Adopters | p + qF | Change on previous |
|---|---|---|
| 0 | 0.0300 | — |
| 1 | 0.0617 | +105.6 % |
| 2 | 0.0933 | +51.4 % |
| 3 | 0.1250 | +33.9 % |
The first colleague who joins you slightly more than doubles the pull on everyone else. No subsequent recruit ever moves the rate that much again.
So spend your effort accordingly. One well-chosen person early beats five later, and the arithmetic is not close. Write down who your one is.
Exercise 2.3 — Find the gap in your own team (45 minutes)
Write every team member's name and your honest estimate of their threshold: how many others they would have to see doing it first.
Sort them. Find the value at which nobody sits. That is the gap, and it is what is actually stopping the practice — not resistance, not culture, not communication.
The chapter's demonstration is worth reproducing on your own list:
circle A 0 1 2 3 4 5 6 7 8 9 10 11 mean 5.500 -> 12 of 12
circle B 0 2 2 2 2 2 2 2 2 2 2 11 mean 2.583 -> 1 of 12
Circle B is more than twice as eager on average and never moves. If your team looks like B — nearly everybody willing once two others go, and no route to two — then you and one other person are the entire intervention, and no amount of explaining will substitute.
Exercise 2.4 — The honest negative (30 minutes)
Write the strongest case against your own diffusion effort. Really write it.
Common honest negatives, any of which may apply:
Bringing one of these forward yourself, with the arithmetic, is the fastest way to be taken seriously by the people who run the scheme.
Exercise 3.1 — Choose the second adopter properly (two weeks)
Not the person who agrees with you in the break room. Four criteria, in order:
Exercise 3.2 — Build the bridge that does not exist (one month)
Find the two teams the practice has to cross between and create one real shared task with one person from each on it, both names on the output.
Not a briefing. Not a demo. A task, with a deadline, that neither could complete alone.
This is the entire mechanism and it costs a few hours. Afterwards, each team has a person who can see somebody in the other team doing the thing — which is the second signal that could not previously arrive.
Exercise 3.3 — Make the diffusion itself a measured line (two weeks)
Here is the ask, and it is reasonable, specific and cheap:
"Add one measure to the scheme: the number of teams running the practice at the end of each period. Not as a target — as a counted fact, reported beside the improvement."
Why this is worth asking for, in the scheme owner's own terms:
If the scheme will not add a measure, ask instead for the one that costs nothing: that the names of the people who carried a practice between teams are recorded on the improvement's own documentation. Attribution is not a consolation prize. It is what makes the same people do it again.
Exercise 3.4 — The four lines for your own circle (one meeting)
If you are running a working group of any kind, write these on one page:
Then hold the meeting where everybody says yes out loud, together. Not a circulated document. The simultaneous assent is the mechanism, because it is the only moment when every member receives reinforcement from every other member at once.
Exercise 4.1 — Name the second owner of the practice (this week)
Every practice you spread should have a second person who can teach it, in another team, by name. Ask them explicitly. Give them the credit for the first team they carry it to — not a share of the credit, the credit.
This costs you nothing that is real and buys you the only thing that makes diffusion compound: a practice with two teachers spreads from two places at once.
Exercise 4.2 — Price your own continuity (30 minutes)
The chapter's charter arithmetic applies to you directly.
median employee tenure (BLS, Jan 2024) 3.9 years
implied constant hazard, ln 2 / median 0.1777 / yr
P(the person carrying this is gone within 3 years) 41.3 %
If you are the only person who can teach the practice, there is a better than two-in-five chance it stops within three years — and everyone's pool falls with it. Say that sentence out loud in a scheme meeting. It converts "I would like a colleague trained" from a personal request into a risk statement with a probability attached, and those are received differently.
Exercise 4.3 — Ask for what the arithmetic says (one conversation)
Three asks, in ascending order of what they cost the firm. Ask for all three; expect the first two.
Exercise 4.4 — Delight, which is not a soft word here (ongoing)
A practice people enjoy performing spreads without anybody pushing it; a practice that is merely correct requires somebody to keep pushing, and that somebody is you, indefinitely, unpaid.
So make the practice itself good to do. Shorter. Cleaner. Better tool. The bit that was tedious, removed. Then watch what happens to the diffusion rate, because you are now measuring it.
Answer each in writing. Any you cannot answer is this month's most valuable question.
The last two are this chapter's additions, and in most schemes both answers are no. Both are cheap to fix and both raise the pool.
For the scheme owner, or your manager. Six sentences, in this order.
"There's a method in team four that's worth about £X a period and it's been in one team for eighteen months.
It hasn't spread because nobody in the other teams can see two people doing it — that's a structural thing, not an attitude thing.
I'd like to set up one shared task between team four and team seven, with one person from each, over about a month.
If it works, the pool rises by roughly £Y next period, and I'll show the working either way.
Two things I'd ask for: that we count how many teams are running it each period, and that whoever carries it gets named on the write-up.
Neither costs anything, and the second one is what makes somebody do it again."
No urgency, no complaint, no request for a decision on the spot. A number, a mechanism, a small ask, and an offer to be checked.