THE 3-LENS PRINCIPLE

THE 3-LENS PRINCIPLE: View opportunity costs through these three lenses: (1) Compared with what? (2) And then what? (3) At the expense of what?*

— from Decisions & Choices (Decision/Choice/Focus/Forethought/Consequences) · Clear Thinking: The Art and Science of Making Better Decisions by Shane Parrish

In the book

and at the expense of what? One more sorting rule is worth keeping: the decisions that deserve real deliberation are the ones that are both consequential and hard to reverse; the inconsequential or easily-undone ones should be made fast and delegated freely. Now the toolkit for the decisions that earn the slow path. — Decisions & Choices (Decision/Choice/Focus/Forethought/Consequences)

Also belongs to

• True North (Ethics, Integrity, Truth, Values)
• The Instruments (Awareness/Perception/Expectations)

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