A useful boundary can sharpen a task, but pressure is not the same thing as focus.
A review meeting gets an hour by default, so the discussion grows until the hour is gone. Give the same meeting a decision, an owner, and a shorter timebox, and the conversation has a reason to finish.
Origin
C. Northcote Parkinson opened a 1955 satirical essay with the observation that work expands to fill the available time. It is a useful planning maxim, not a scientific law or a reason to impose false urgency.
Give a task a clear outcome, owner, and stopping point. A deadline without a definition of done only creates pressure.
Use timeboxes to force scope decisions, not to hide unrealistic expectations. Quality and safety still need enough time.
Keep forms and workflows bounded. Show the number of meaningful steps and remove optional work that has no clear purpose.
Avoid countdowns that manufacture urgency. A real deadline should explain what changes when time runs out and why.
Digital systems
A bounded review flow
The interface names the decision, lists the required reviewers, and shows a real due date. Optional discussion does not expand the task beyond the decision it must produce.
Physical signals
Packing a smaller bag
A smaller suitcase forces a clearer choice about what the trip requires. The constraint helps only if it still fits the real journey.
Scope, discussion, or optional work keeps expanding because nobody has defined the outcome, the limit, or the point where the work is complete.
Define what done means, set a reasonable limit, and make tradeoffs visible before extra work quietly becomes part of the task.