A friend shared this great analogy* for how teams work at different project phases.
Early phase: Golfing Buddies (2-3 players)
In the early phase of a project you and a partner or two (if you have any!) do all the work. You do a lot of your work together with quite a lot of crossover, share tools, might carry each other’s golf bags. There’s camaraderie, little need for planning or job descriptions, and most things you face can be worked out informally as you go. You need to do the work of compensating for your weaknesses yourself.
Intermediate (small) phase: Basketball team (5+ players)
There are more players and each has a position and you start to benefit from specialisation but you interact a lot and in many ways are still basically interchangeable. Plans and strategy matter, but tactics are king. You’re fast and responsive.
Intermediate (large) phase: Rugby team** (15+ players)
The team is getting bigger. Everyone still plays together but there is definite specialisation and team members stop being able to cover each other’s positions. Communication and chains of command become increasingly important and plans become harder to change. Danger of silos and factions.
Mature (large) phase: American Football Team (40+ players***)
There is very deep specialisation and there are clear teams-within-the-team – whole sets of players can play in the same game but never play together. Planned plays and frequent stops for communication are the norm. Management and support structure becomes increasingly important – and expensive. Danger of suffocating bureaucracy.
***I’ve been a bit fast and loose with the numbers on teams: basketball and rugby teams will have substitutes that take the number of players higher, and American football teams only field 11 players at a time, but have separate offensive, defensive and special teams that all play during different phases of the game.