Why Team Size Is Only Half the Story

"Please only start stories when others are finished." This message was sent by Lena in a team of nine that was losing itself in chaos. Many believe the perfect team size is between 3 and 9 members, but I've seen that it's not just about the numbers.

Whether team members are T-shaped or specialists makes the difference between a team that remains flexible or one that descends into chaos when disruptions occur.

When Team Size Becomes a Trap

Imagine a small team of three: Lena, Tom, and Priya. The day starts with a Slack GIF from Priya—a cat desperately looking at the clock. "Daily in 3 min—and my tests are still red 🙈," she writes. Tom, the senior dev, is already on the Teams call, coffee in hand.

Lena joins: "Morning, you two—short and sweet today, right?" In such a small team, everyone knows each other's work almost too well. There's no buffer zone—one absence and the sprint goal is at risk.

The problem with such a small team is not just the lack of a buffer zone but also the constant dependency on each other. If Priya can't complete her tests because the API interface has changed, everyone else might have to stop their work to help.

This can quickly lead to frustration as individual contributions are constantly dependent on external factors beyond control.

In a team of six, the world looks different. Max, the creative frontend dev, is late to the daily because his build is running. Sara reassures him: "No stress, we're not machines 😉." Here, there are enough people to cover absences.

But communication requires active organization, and if no one sets clear priorities, sprint goals can become diluted. The danger is that team members rely too much on their own responsibility and neglect joint coordination.

A larger team can achieve more, that's the assumption. But reality can be deceptive. In a globally distributed team of nine, daily meetings now last 25 minutes. Time differences and consensus-seeking slow progress. Lena sends a message: "Please only start stories when others are finished."

But not everyone listens. In such a large team, communication becomes a challenge as coordinating across different time zones is often arduous.

A large team has the advantage of high specialization but often lacks focus. Individual members pursue their own priorities or don't respond immediately to requests, leading to stories being started but not finished.

Motivation drops because the sprint goal often becomes just a nicely worded headline for the stakeholder report. It's more about getting everyone on the same page than actually moving forward.

The Hidden Dynamics

Here's the crux: Whether a team functions depends less on its size and more on how it collaborates. FlightRoom has demonstrated this impressively. After a frustrating retrospective, Lena suggests doing the next team workshop with FlightRoom.

This decision marks a turning point, as suddenly the focus is on collaboration, not individual performance.

In the simulation, Tom takes on the role of captain, while Priya in the tower provides quick, precise answers. Time is pressing, but decisions are made quickly and in alignment. This experience shows that clear communication and trust within the team are key.

The simulation offers a stress-free environment where team members learn to rely on each other and communicate more efficiently. Everyone realizes that the team's success depends on teamwork, not size.

After the simulation, it's as if a switch has been flipped. Team members begin to integrate the new knowledge into their daily work. They realize that it's not enough to just focus on their own tasks.

The real challenge is understanding the work of others and, if necessary, resetting priorities together. This insight is the key to more effective collaboration and better results.

What Really Matters

After the FlightRoom experience, the world looks different. Three sprints later, stories are completed rather than just started. The goals are achievable and motivating, the team spirit is better—even in the large, distributed team.

The simulation not only improved communication but also deepened the understanding of collaboration. It becomes clear that while team size has an impact, it is not decisive if the internal dynamics are right.

The takeaway? The optimal team size depends on more than just the number. It depends on skills, communication, and the willingness to truly collaborate. Sometimes, a shared exercise like FlightRoom is enough to bring exactly that back.

Evaluate your team dynamics, question the distribution of roles, and ask yourself if your team truly acts as a unit. These questions are crucial to enhancing your team's effectiveness and achieving the set goals.