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Interruptions cost more capacity than the meetings themselves

An interruption does not cost the two minutes it takes but the way back into the task. This article describes how FW Delta treats undisturbed work as the default, what that means day to day and what you can check in your own company.

Fabian Weiss, founder of FW Delta Fabian Weiss
Feb 26, 2026 5 Min Read

Key Takeaways

  • After an interruption it takes around 23 minutes on average until someone is fully back in their task. Four interruptions cost the afternoon.
  • Write instead of talk, goals instead of control, argument instead of title. Three rules FW Delta works by.
  • Culture is not a mission statement question but a structure question. What you write down holds. What you wish for disappears.

The afternoon is gone, not just the hour

Executives spend a large part of their week in meetings. Engineers and developers less, but still enough that the calendar cuts the day into pieces. The hours in the meeting are only the visible part.

The invisible part is the way back. The researcher Gloria Mark at the University of California in Irvine has measured that people need around 23 minutes on average after an interruption until they are fully back in their task. Whether the interruption was a meeting, a Slack message or the question “got a minute” makes no difference.

With four interruptions a day you therefore do not lose four times two minutes. You lose the afternoon.

At FW Delta we do not treat unnecessary interruptions as a communication problem but as a defect in the workflow. A defect that can be fixed.

The point in one sentence

An interruption does not cost the minutes it takes but the way back into the task. That way back is the most expensive part of your working day.

Attention is what stays scarce

The economist Herbert Simon described in 1971 that in a world full of information, people’s attention becomes the scarce resource. That was long before email and chat and has become more true every year since.

With AI models taking over routine work, the observation gets even sharper. When summarizing, sorting and forwarding become cheap, human attention is what remains as the part that cannot be multiplied. Why that changes the math for many tasks is covered in Economics of Infinity.

Every meeting that produces no decision and every status report that could have been a short video or three lines of text spends that resource on nothing.

What has changed since 2022

A few years ago many companies ran on this logic: Whoever has the most appointments is important. Leadership was presence. Culture was a foosball table and a fruit basket.

Today we see a different logic at the companies we work with. Whoever has the longest undisturbed blocks delivers the most. Leadership shows in the quality of written decisions. Culture is the set of rules that produces results or prevents them.

That is not a law of nature and it does not apply equally everywhere. A sales team lives on conversations. A development team lives on quiet. But the direction is the same for all knowledge workers.

Three rules FW Delta works by

We are a small company. For us these rules are easier to keep than in a corporation with 500 people. Still, they transfer, because they do not depend on size but on habits.

Write instead of talk. Briefings instead of meetings. A short video instead of a call. No expectation that someone replies within five minutes. The effect is bigger than it sounds: If you have to write, you have to think. Half-finished ideas do not survive the text. And the company gets a searchable memory instead of hallway gossip.

Goals instead of control. Nobody checks whether someone is working. There are goals. How, when and where the goal is reached is up to the person. We measure results, not hours. When an automation reduces a week of manual work to a few minutes, the person has gained that week for something better.

Argument instead of title. The better argument or the better code wins, not the position. Data beats opinions. That sounds obvious and is true in very few companies.

HabitUndisturbed work as the default
Presence countsResults count
Verbal by defaultWritten by default
Decision in the meetingDecision in the document, meeting only on disagreement
Knowledge in headsKnowledge searchable
Reply expected immediatelyReply expected the same day

Culture is a structure question

Culture is not the mission statement on the wall. Culture is what happens when nobody is watching. And what happens follows the structures you have built: Which appointments are in the calendar, which channels count as urgent, what gets rewarded.

That is why culture initiatives rarely help. A workshop changes the wishes but not the structures. Three changes to the structure, on the other hand, work immediately:

  1. Measure. Count meeting hours per employee and week. How to turn that into a cost total is covered in What meetings really cost.
  2. Cancel. Take the recurring appointments that only distribute information and replace them with a written format. What does not work in writing does not need a meeting. It needs a better format.
  3. Protect. Set fixed blocks without meetings and without any expectation of immediate replies. Four hours a day is a good start. Two are better than none.

This depends on your starting point. In a company that settles everything verbally, the second step is the hardest and takes months. It is still worth it.

What you can check

  • How many hours in a row can a person in your company work undisturbed on a normal Tuesday? If the answer is below two, that is your bottleneck.
  • Which recurring appointments would be missed if they were cancelled for a week? The others you can replace.
  • Where are decisions recorded? If the answer is “in the meeting”, there is no memory.
  • Which channels count as urgent? If everything is urgent, nothing is.

Why we work this way at FW Delta and where the conviction comes from is told in the founder’s story.

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