Be decisive in ambiguity and change

Find the common threads and translate vague ideas into concrete execution plans to create focus.

Back to the universal principles

Calibration

Under, just right, over.

Situation	Under	Just Right	Over
A vague goal at kickoff	Leaves the goal as a phrase and lets each person invent a project.	Turns it into the outcome, the owner, and the first week of work before the meeting ends.	Writes a plan so detailed it pretends the uncertainty is already gone.
Three ideas that are one	Staffs all three because they were said out loud.	Names the thread they share and picks one execution plan.	Forces a merger that keeps every idea's scope, so nothing got more concrete.
A plan with no owner	Ends the discussion with a shared sense of progress and no name on the work.	Writes the next three steps, who does each, and the date of the first one.	Assigns an owner to every hypothetical branch, including ones you will not hit.
The team is stuck in ambiguity	Tells people to get comfortable with ambiguity and adds no plan.	Separates what is known, what is a guess, and the next action that would reduce the guess.	Demands certainty before anyone may move, which freezes the week.
A discussion that should become work	Schedules another discussion.	Leaves with a one-page plan the team can start tomorrow.	Produces a long document nobody will run, and calls the document the plan.
False precision	Keeps the idea vague so you cannot be wrong.	Puts a number, a date, and a scope on it, and marks which figures are still guesses.	Publishes exact figures you have not earned, and the team plans around fiction.

Further reading

Sources and essays on this principle.

Life at Arm
The published wording of this principle, under the 10x Mindset.
arm.com
Arm Company
The mission and company context this principle is meant to serve.
arm.com