Every organization runs on two structures at once. There is the one on the slide — boxes, titles, reporting lines — and there is the one people actually use to get things done. They are almost never the same map, and the distance between them is where a great deal of an organization's real behaviour lives.
The map is not the territory
Formal structure tells you who is accountable. It is close to silent on who is influential. The engineer three levels down whose opinion quietly settles architecture debates; the executive assistant who decides what actually reaches the leader; the veteran whose blessing a change needs before it will stick — none of them appear on the chart with the weight they carry.
Authority is granted by the diagram. Influence is granted by everyone else.
Reading the informal structure
Ethnographic attention makes the second map visible. In the field we trace not titles but traffic:
- Where questions actually go. Who gets asked "what do you think?" before a decision is finalised.
- Whose language spreads. The phrases that travel through the organization usually have an author.
- Where things stall. A recurring bottleneck is rarely a process problem; it is usually a person the process pretends isn't decisive.
Why the gap matters
Reorganisations fail when they redraw the formal map and assume the informal one will follow. It does not. The influence map is built from trust and history, and it updates on its own timeline. Leaders who can see both maps make changes that hold; leaders who can see only the slide keep being surprised by their own organization.