Leaders often wait for perfect proof. Others act with almost none. Both create risk. You need a simple threshold for action.
Three evidence levels
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Signal level
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A pattern appears in one dataset.
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Action: investigate and confirm.
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Converging level
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Two or three sources point the same way.
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Action: run a small, targeted adjustment.
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Strong level
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Converging evidence plus a plausible mechanism.
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Action: scale, resource, and monitor.
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What counts as “good enough”
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The pattern is consistent, not a one-off.
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The explanation is plausible and testable.
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The proposed action is low risk and reversible.
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You have a monitoring plan.
A useful leadership sentence
“We have enough evidence to trial a small change, and we will review it in two weeks.”
Key Takeaways
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Match the size of action to the strength of evidence.
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Trial small changes before scaling.
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Monitoring is part of the decision, not an extra.
Quick Check
Write one low risk action you could trial if your hypothesis looks plausible.