More isn't always proportionally more
More salespeople — more sales. More raw materials — more finished product. Sounds like simple arithmetic. But business rarely multiplies that cleanly — and an owner planning «by multiplication» almost always overpays.
Not everything in the report grows equally
The first trap is assuming all indicators are linked directly proportionally: increase one by X — the other grows by X. Only some costs behave that way.
- Grow proportionally. Direct (variable) costs: more units — proportionally more materials, packaging, piece-work pay.
- Grow disproportionately. Rent, management, logistics don't double when sales double — they move in steps.
- Even shrink. Per-unit COGS can fall with scale — for example, on volume discounts.
Put all those lines on one straight slope and the picture of the business distorts — decisions get made on a wrong model.
Constraints invisible in a flat table
The second trap is more serious. Even where the relationship is genuinely direct, two metrics can't grow together indefinitely — because one of them has an objective limit. Once it's hit, adding more «input» is useless: money spent, output unchanged.
| Chain | Raw materials → Equipment → Finished product |
|---|---|
| Constraint | Equipment processes only a fixed volume |
| Result | More materials and people won't yield more product |
You can buy twice the materials and hire more people. But if the equipment can't physically process more — finished goods don't increase. Instead, money freezes as inventory on the floor, and staff sits underutilised. The constraint at one link devalues the investment in all the others.
That's why the need for materials and new people is calculated not from desired sales volume — but from what the constraining link can withstand.
How to count properly
Before scaling resources, walk the business as a chain and ask a few questions:
- Cost behaviour. What grows proportionally, what slower or in steps, what falls with volume?
- Bottleneck. Which link constrains the whole chain — equipment, warehouse, key specialist, lead flow?
- Input check. Can the constraining link handle more inputs — or will money freeze?
- Starting point. Plan from the narrowest link, not from the desired outcome. First expand the constraint — then everything else.
In closing
The obvious «more = more» costs money twice: in overpayment for the resource that didn't work, and in time lost on the wrong target. Business isn't a multiplication table. It grows exactly as much as its narrowest link allows.