Team Communication Costs
People often ask me, how big should an improvement team be? My answer: as small as possible.
In Fred Brooks’ Mythical Man Month, he points out that communication pathways increase in a nonlinear fashion. The formula is simple:
(n2-n)/2
Where n is the number of people on a team.
- 2 people = 1 connection (4-2)/2
- 3 people = 3 connections (9-3)/2
- 4 people = 6 connections (16-4)/2
- 5 people = 10 connections (25-5)/2
- 6 people = 15 connections (36-6)/2
- 7 people = 21 connections (49-7)/2
The bigger the team, the more time is spent on discussion and communication, not progress.
