Protected attention

Count the interruptions in your last hour of work. The message that pulled your eyes from the document. The notification that won the half-second tug at the edge of the screen. The “quick question” that arrived in person. For most knowledge workers the honest tally runs into the dozens — and each one costs far more than the seconds it seems to take.

We have built a working culture that treats attention as infinite and interruption as free. It is neither. Attention is the one input every act of judgement, creativity and care depends on, and it is being strip-mined by the very tools meant to make us productive. AI is about to pour more on the fire: more drafts, more summaries, more prompts, more to react to.

Which makes a quiet, unfashionable claim the argument of this essay: in an age of infinite information, the leader’s scarcest job is to defend the conditions for thought.

Look closely at how a modern working day is actually spent and a disturbing pattern emerges. Gloria Mark, who has studied digital attention at the University of California, Irvine for two decades, found that the average time a person now holds their attention on a single screen before switching is about 47 seconds. In 2004, when her team began measuring, it was around two and a half minutes. We have not become busier so much as more fractured.

The interruptions arrive from every direction at once. Microsoft’s telemetry across millions of workers finds them pinged by a meeting, email or notification roughly every two minutes of the working day — some 275 distinct interruptions in core hours. Half of these are not even external: we interrupt ourselves, reaching for the phone, checking the inbox, breaking our own concentration out of a habit the tools have trained into us.

We have built a working culture that treats attention as infinite and interruption as free. It is neither.

The cost of an interruption is not the interruption. It is the recovery. Mark’s research puts the time to fully return to a demanding task after a single break at around 23 minutes — not because the task is hard to find again, but because the mind does not switch cleanly. The psychologist Sophie Leroy named the reason “attention residue”: when you turn from task A to task B, part of your mind stays snagged on A, and you arrive at B already diminished.

This is why a day full of “quick” interruptions leaves you exhausted with little to show. A thirty-second message can cost twenty-three minutes of depth, and the loss compounds: interrupt a person often enough and they never reach the deep, effortful state where real thinking happens at all. They spend the day in the shallows, reacting — busy, drained, and strangely unproductive.

Here is where AI changes the stakes. These tools are extraordinary at intake — they generate drafts, summaries, options and answers faster than you can read them. What they cannot do is the part that matters most: decide what is worth attending to, sit with a hard problem long enough to understand it, and exercise the judgement a leader is paid for. AI multiplies the volume of information; it does nothing to multiply the attention required to make sense of it.

So the bottleneck of good work is shifting from access to attention. And attention, unlike information, does not scale. That makes it a leadership problem, not a personal-productivity one. No individual can hold the line alone in a culture that rewards instant replies and treats a quiet calendar as a sign of slack. The conditions for deep work are set by the team’s norms — and those norms are set, consciously or not, by whoever leads. If you reward the fastest reply, you will get a team that never thinks.

The instinct, when overwhelmed, is to add: another tool to manage the tools, another system to tame the systems. But attention is not defended by addition. It is defended by subtraction — by removing the interruptions, meetings and channels that fragment the day, until what remains is space enough to think. The most valuable thing a leader can give a team is not another resource. It is a blank stretch of the calendar and the permission to guard it.

This means protecting blocks of uninterrupted time as fiercely as you would protect a budget — and modelling it from the top. It means agreeing, as a team, that not every message deserves an instant reply, that “I’ll think about it and come back tomorrow” is a sign of seriousness rather than slowness, and that the person heads-down on hard work is not ignoring you but doing the job. Subtraction is uncomfortable because it looks like doing less. It is, in fact, the only way to do the work that counts.

Attention is not defended by addition. It is defended by subtraction.

Protecting attention is a discipline, not a wish. These five are where a leader starts — this week.

Do this and the day stops being something that happens to you. It becomes, again, something you can think inside.

The machine will give you infinite information. Wisdom is what’s left after you’ve had the quiet to think. Defend the quiet.