Two opposite disciplines govern how figures go together here. Some numbers may never be added, since the addition smuggles in an assumption nobody has. Others may never appear alone, since on their own they read backwards.
| Event | Cost | Composition |
|---|---|---|
| Putting a man in the field | ₽3.4–3.6 mn | Signing bonuses of about ₽2.05 mn — ₽400,000 federal plus regional payments averaging ₽1.65 mn — and six months of pay at ₽1.3–1.5 mn |
| Death | ₽9–11 mn | The federal lump sum, insurance, and regional payments to the family |
| Wounding with disability | up to ₽3 mn + pension | Lump sum for injury, plus a pension for which no series has been collected |
The obvious next step is one figure: cost per casualty, or cost per man-year of war. Quotable, comparable and wrong.
Any sum implies a ratio of deaths to woundings to men who serve and return, and that ratio is exactly what is not known = the composite would look like a measurement while resting on an assumption never stated, and being a single number it would be quoted without the assumption forever after.
What is published instead is the three figures side by side, each attached to the event it arises from. A reader who has a distribution can combine them and take responsibility for it. The panel does not supply one it lacks.
The first figure contains a choice: six months of pay rather than twelve or twenty-four. The horizon is justified by turnover — recruitment on the order of 360,000–400,000 a year against a force of about a million makes a half-year contract a conservative unit of account — and it is declared as an approximation rather than a measurement of average time in service.
Inside a composite the horizon would have become invisible: a cost-per-casualty number carries the same assumption, and nothing in the number tells the reader it is there. The discipline is not that assumptions are forbidden. It is that each figure should carry at most one, in view.
| Quantity | Question | What it counts |
|---|---|---|
| The claim against revenue | How large the task is | A magnitude |
| Conversion mechanisms spent, of those known | How many moves have been used | Decisions — the input |
| The manifestation matrix | How far the manifestation has gone | Consequences — the output |
A magnitude, a counter of decisions and a counter of consequences share no unit, thus averaging them produces a single figure that moves for three unrelated reasons and conceals which one moved. That is the opposite of what the panel is for.
The same refusal applies inside the matrix. A scalar of cells filled per quarter is not published, since cells are not equidistant and are opened by gates of different kinds. Speed is measured only within a circuit, in months between entry into adjacent depths, where the comparison is between like things. The order of circuits relative to one another is not established at all: the reader chooses the circuit and the depth, and the panel names neither.
Two real rates are handled the same way, and the instinct to pick one is what the rule exists against. The policy real rate is positive, the household real deposit rate is negative, both are correct and they describe different agents. The panel publishes both and declines to choose, stating only which of them sets the zone and why — a household does not see the policy rate and takes no decisions on it.
The claim on the state perimeter is a composite of thirteen lines, so the discipline is not a blanket prohibition. It is admissible since the lines share a unit and a period, and since two rules apply.
The test between the two cases is short enough to keep in the head: components sharing a unit and a period may be summed, and the sum must be shown as its parts; components requiring an unknown weight to combine may not be summed at all.
It costs the headline. A single number travels, three numbers with their events named do not, and a reader who wants one figure will either leave or build their own. The panel accepts that, and the acceptance carries its own risk: a set of figures with no stated reason for staying apart is an invitation to combine them, and the combination will then be attributed to the panel.
Thus the reason is published beside the refusal in every case, rather than the refusal alone. Someone who builds the index anyway has been told what it conceals, and the responsibility moves with the number.
Country risk, supply chain exposure, portfolio stress, programme performance. Etc.
Three failure modes.
A number that cannot be added is telling you something about the world. An index built over it is telling you something about its author.