Two kinds of knowing.

The book argues that institutions are drawing down an asset they do not count, and that the drawdown shows first in the middle of the organisation. There is an objection to that. We think it is right, and it changes what the framework has to do.

It runs like this. Much of what a middle layer knows is navigational. Who in the company has done this before. Which approval unblocks what is stuck. Whose sign-off is real and whose is ceremonial. That knowledge takes years to acquire and it is worth money. It is a different capacity from doing the work well and from telling when the work is wrong. Much of it accumulated because coordination used to be expensive. Make coordination cheap and some of that layer becomes surplus. Thinning it is a correction.

The distinction has a name and two decades of literature behind it: the expertise to do the work, and the expertise to know who can do it and to judge whether they have.¹ The second is much of what a good general manager sells, and the middle layer is where an organisation’s knowledge of who knows what has lived.² The economics point the same way. A firm exists because coordinating inside it comes cheaper than buying in the market, so cheaper coordination predicts flatter firms.³

The thinning is on the record, in the companies’ own filings. Citigroup told shareholders it had announced plans to take management layers from thirteen to a median of eight — a plan, at the point of filing. Gap describes widening spans of control and cutting layers to speed up decisions. 3M puts the same move in its restructuring note.⁴

A framework that reads every flattening as a drawdown of judgment capital will escalate a healthy correction, and deserve the reception it gets. The register carries a rule about this: every entry states, in advance, the condition under which it comes back off, because a sheet that records only worsening stops being read. A sheet that fires on every reorganisation stops being read sooner.

The concession stops at one place. Inside a firm, the two kinds of knowing have been carried by the same activity. Command of a specialism’s language is picked up by sitting close to the work, and sitting close has meant doing the junior work — the first-pass draft, the file nobody senior wanted, the meeting you sat in because somebody had to take the note. That is where a person learns who to call, and where they learn to do the thing. Remove the work and both go.

The part we could not answer is this. Nothing a human-resources function runs separates the two. The nine-box grid rates performance against potential. Bench strength counts ready-now successors per critical role. Competency frameworks list behaviours, and succession slates name people. None of them asks whether an individual can produce the work with the tools switched off.

Here the nine-box does something worse than stay silent. Potential ratings anchor on observed output, and when a machine carries more of the output the observed work improves. The bench reads stronger on the instrument in the same period it thins underneath. An organisation running that grid through an AI deployment is being told the opposite of what is happening, by a tool it has trusted for decades. We have not seen that inversion measured. The reasoning is ours.

The asymmetry is what puts this on a board agenda. Cut coordination overhead wrongly and you spend a quarter putting it back, at a price you can name. Cut formation wrongly and you learn of it in a decade, in a seat you cannot fill, with no supply to buy because your competitors cut in the same years you did. A director who cannot separate the two beforehand still faces two very differently sized downsides.

How much time you have depends on where you sit. An American firm gets far fewer years with a person than a European one, and a much larger share of its people have been in post under twelve months. Formation there has to happen faster, on less of a runway.⁵

What the objection changes is the instrument. Before a flattening reaches the succession line, the register owes three answers about the work being removed. Which of these steps was somebody learning on. Who currently senior acquired their eye by doing them. And once the layer is gone, what is left that a new person could form on.

The difference is visible in advance, once somebody builds the test. That belongs in the appendix with the other methods, priced and graded. The objection stays in the book.

Flattening a layer that coordinated things is arithmetic. Flattening the layer where the people were made is spending an asset.