Concept
Domino Effect
The domino effect is the principle that tasks are unequal in impact, so identifying and finishing the single task that makes the others easier or unnecessary topples a chain of results far larger than the effort you spent.
The idea in its modern form comes from Gary Keller and Jay Papasan's "The ONE Thing," built on physicist Lorne Whitehead's 1983 demonstration that a standing domino can knock over one about one and a half times its size. Line them up, and a small push takes down something enormous. It works for a geometric reason rather than a motivational one: progress is sequential, not simultaneous. The most common mistake is flattening it into "every small step snowballs." Size isn't the point — sequence is. The second mistake is nudging nine dominoes an inch instead of pushing one all the way over. Half-finished work is expensive, because every return charges you the full cost of reloading your attention.
A real-life example
A two-person accounting-software team in Kadıköy spent every morning answering support email. For one week the founder tallied the questions: sixty percent were the same setup step. He gave a full day to writing an illustrated setup guide and finished it end to end. The next week his inbox shrank by a third, and the hours for real work appeared on their own.
How to use it
- 1Before you open anything tomorrow, list your tasks and ask of each: "If this were done, would the next three get easier or disappear?" Circle exactly one.
- 2Write your definition of "fallen" before you start — not "work on the report" but "first section drafted end to end."
- 3Book one uninterrupted 90-minute block for it with notifications off; everything else goes on a waiting list and stays there until the domino is down.