Philosophy

In 1971, economist Herbert Simon wrote: "A wealth of information creates a poverty of attention."^[1]

He wrote this before the internet existed. He was describing something that was already true about the world he lived in, and it has become more true with each decade since. The problem is not a shortage of information. The problem is that having more information than you can process does not make you better informed. It makes it harder to think.

A browser full of open tabs is a small version of this problem made visible.

What a tab really is

When you open a browser tab, you are making a small decision: I want to look at this. But most of the time, that decision does not get completed. You look at the page briefly, or you do not look at it at all, and instead of closing it, you leave it open. The tab becomes a placeholder for a decision you have not made yet.

This is why tab bars fill up. It is not that people open too many things. It is that they do not close them. Every open tab is a decision that got deferred.

The problem with deferring decisions is that they do not disappear. They stay in your peripheral vision, taking up a small but real amount of attention. Not enough to notice clearly. Enough to make everything slightly heavier.

The illusion of readiness

There is a feeling that comes with having many tabs open. It feels like being prepared. Like you have the resources you need right there, available at a glance. This feeling is an illusion, but it is a convincing one.

In practice, having many tabs open does not mean you are ready to do more things. It means you have created more things to decide about. Each tab is a small obligation you have made to yourself. Together they create a kind of paralysis. When everything is available all the time, it becomes harder, not easier, to focus on any one thing.

The same pattern shows up elsewhere. An inbox with thousands of unread messages. A to-do list with hundreds of items. A reading list that has not been opened in months. In each case, the accumulation feels like staying on top of things. In practice, it is the opposite.

Deciding vs. deferring

The One Tab Rule is, at its core, about deciding instead of deferring. When you open a tab, you either use it or you close it. You do not keep it open as a reminder that you might want it later. You make a decision and move on.

This sounds simple, but it requires trusting that you can find things again when you need them. Most people who hoard tabs do not actually trust this. They keep the tab open because they do not trust that they will remember to look for the page later, or that the page will still be there, or that they will be able to find it again.

Part of practicing One Tab Rule is building that trust. Closing a tab and finding the page again when you need it. Doing this enough times that the fear of losing things starts to diminish. The information was not lost when the tab closed. It was just somewhere you were not currently looking.

Attention as a finite resource

There is a useful way to think about attention that comes from the same line of research as attention residue. Attention is not infinitely divisible. You cannot give ten things each ten percent of your attention and get the same result as giving one thing a hundred percent. The quality of attention degrades when it is split.

Open tabs are not demanding your full attention. They are each taking a small piece of it. The sum of many small pieces can be significant. And the problem compounds because you usually do not notice it happening. The degradation is gradual and does not announce itself.

Working with one active tab is a way of not splitting your attention across things you are not actually working on. It is not about discipline. It is about removing the constant low-level pull that many open tabs create.

A note on digital minimalism

One Tab Rule is related to, but not the same as, digital minimalism. Digital minimalism, as described by Cal Newport,^[2] is about being intentional in how you use technology overall. Removing services and tools that do not add value. Being deliberate about when and how you engage with digital things.

One Tab Rule applies a similar kind of intentionality to a single specific behavior: how you manage open browser tabs. You do not have to adopt a broader philosophy of digital minimalism to benefit from it. But if you are interested in the wider ideas, the connection is there.

The underlying principle is the same. More is not always better. Having access to everything all the time does not help you do any one thing well. Constraints, when you choose them yourself, create clarity.