Challenge skillfully

Challenge respectfully when things don't make sense and back yourself. Value independent thinking. Discuss openly, listen, then drive the decision quickly.

Back to the universal principles

Calibration

Under, just right, over.

Situation	Under	Just Right	Over
A plan that does not add up	Lets it pass because challenging it would slow the room.	Says what does not make sense, listens, and drives a decision before the meeting ends.	Keeps challenging after the decision so the work cannot start.
You see it differently from the room	Goes along and saves the objection for later.	Puts the independent view on the table, hears the reply, and either updates or holds it.	Treats independent thinking as refusing to hear anyone else.
The room wants to keep talking	Lets the discussion replace the decision.	Summarizes the options, picks one, and names when you will revisit it.	Cuts off the discussion before the objection has been understood.
You were the only dissenter	Drops the point as soon as you notice you are alone.	States it once, clearly, and then commits to whatever the decision is.	Reopens it with each new audience so the decision never settles.
A call that can be made today	Asks for another meeting because the topic feels important.	Decides today on the part that is clear and writes down the one question that can wait.	Decides in the first minute and skips the listening the principle requires.
Backing yourself	Abandons a sound objection the moment a senior person frowns.	Holds the objection while it still has a reason, and drops it when the reason is answered.	Holds it after the reason is gone, and calls that backbone.

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