Why it exists
Most focus attempts fail before the hour starts. Not during it. The work was never the kind that rewards depth, or the doors were left open, or nobody decided what finished would look like.
Those are three different failures with three different fixes, and all three happen in the ten minutes nobody spends.
This card is those ten minutes, made into an object small enough to actually use. It carries two methods the Journal already argues for, in the order they have to happen.
The method it carries
The Depth Test, then the Four Doors — argued in full in What Deep Work Actually Is (And What It Costs).
First the judgement. Four criteria decide whether a task can use an uninterrupted hour at all: whether continuity makes the output better rather than merely faster, whether it holds more than working memory comfortably carries, whether it is the kind of thing that gets worse when interrupted, and whether you can say what finished looks like. Work that fails the test does not need protecting. It needs doing, in the gaps.
Then the setup. Distraction enters through four doors and they close in a fixed order: the device, the room, the task, and you. The first two take an hour of setup once and then hold. The third is a sentence. The fourth is the one that takes practice, and it is the only one that decides whether the session survives the first hard moment.
The order is the argument. Closing the device while the task is still ambiguous is how people end up with a silent phone and an hour of nothing.
What is inside
- The card: four criteria, four doors, one sentence
- A sheet of eight cards to a page, for cutting
- A short page on what a failed depth test means, and what to do with that work instead
- The one-sentence line: what finished looks like
How it is used
- Take a card before a session you intend to protect.
- Run the four criteria. If it fails, do not protect the hour — schedule the work into the gaps instead.
- Close the doors in order. Device, room, task, you.
- Write the finishing sentence on the card, and keep it in view for the hour.