The Repeatable Brick
A one-of-a-kind project has to be right the first time. A repeatable unit gets to be wrong cheaply, over and over, until the pattern that works reveals itself.
The Promise
"Too big to start" becomes "build the first brick today," which is a commitment a person can actually act on. The whole stays enormous. The unit in front of you today does not.
How It Works
- Shrink the goal to one small, testable unit you can build, learn from, and build again. Not "the course" but one lesson, made well, made again. Not "the book" but one clean chapter, then the next one built the same way.
- Size it between two failure modes. Small enough to finish in one sitting; complete enough to teach you something real about the whole.
- Read the two failure signs. If it never finishes — bleeds past the sitting, never resolves into something you could point at and call done — it's still a fragment, not a unit. If it finishes but the fifth repetition looks exactly like the first, it was too small to carry any signal.
In Practice
The right brick is done by the end of the sitting and visibly different by the tenth repetition than it was on the first. "Write for an hour" is not a brick: it produces no finished unit and teaches nothing you can repeat. "Finish one clean paragraph" is — it ends somewhere, it can be judged, and doing it twice tells you something doing it once couldn't.
This is the same logic that gets bridges built and rockets launched. Repeatable units take the risk out of size.
Primary source: Bent Flyvbjerg and Dan Gardner, How Big Things Get Done.