The two-minute rule

A small piece of advice circulates among people who manage a lot of small tasks: if something takes under two minutes, do it now rather than writing it down.

The reasoning is about overheads. Recording a task, storing it, reading it again later and deciding when to do it can easily cost more than two minutes of attention spread across a week. For a short task, the system of managing it is more expensive than the task.

There is a second effect that matters more for students. A list of forty small undone things produces a particular kind of tiredness that has nothing to do with the work itself. Each item is a small open loop, and open loops occupy attention quietly even when you are not looking at them. Closing ten of them in twenty minutes often does more for concentration than an hour of rest.

The rule has a well-known failure, and it is worth saying. Applied without limits, it turns a day into a sequence of two-minute tasks and the long difficult work never starts, because long work never feels urgent. People who use the rule well apply it in a fixed window — twenty minutes at the start or end of a session — and refuse it entirely in between.

Like most useful habits, it is not the idea that is hard. It is the boundary around the idea.