Knowledge · Toolbox

Tools & traps

The working toolbox of decision analysis: the moves that resolve a hard choice, and the biases that quietly bend one. The traps below aren't a reading list — they're rendered from the same catalog your agent teaches from inside a decision, step by step.

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Method

Even-swap method

The formal way to resolve tradeoffs when no alternative dominates: make alternatives directly comparable by trading value on one objective for value on another until a clear winner emerges.

  1. Start from the consequences table — every alternative scored on every objective.
  2. Cancel out objectives where the remaining alternatives are effectively equal; they no longer matter to this choice.
  3. Pick a difference that matters and ask: "how much improvement on objective B would exactly compensate for giving this up on objective A?" Adjust both cells — that's one even swap.
  4. Repeat. Each swap simplifies the table; eliminate any alternative that is now dominated.
  5. Stop when one alternative wins or the choice is between near-equals — at which point either is defensible.
Smart Choices, Ch. 6 — the book
Trap

Framing

The tell

The way the question is worded is steering the answer — a yes/no frame, a loss-vs-gain frame, a borrowed frame.

The counter

How a problem is framed can determine the choice. State it more than one way and watch whether the preference flips; if it does, the frame — not the facts — is driving. (Smart Choices, Ch. 10.)

Smart Choices, Ch. 10 — the book
Trap

Anchoring

The tell

The first number, option, or idea on the table is pulling every later estimate toward it.

The counter

Minds anchor on the first figure they hear and adjust too little. Form your own estimate before looking at theirs, and seek a genuinely different starting point. (Smart Choices, Ch. 10.)

Smart Choices, Ch. 10 — the book
Trap

Status-quo

The tell

The current / default option is getting a pass the alternatives don't — "let's just keep doing this."

The counter

The status quo has unearned pull because change feels like it needs justifying. Ask whether you’d choose it fresh today, knowing what you know now. (Smart Choices, Ch. 10.)

Smart Choices, Ch. 10 — the book
Trap

Sunk-cost

The tell

A past investment of time / money / effort is being used to justify continuing.

The counter

Money and time already spent are gone whatever you choose — only future costs and benefits should count. Decide as if you were starting today. (Smart Choices, Ch. 10.)

Smart Choices, Ch. 10 — the book
Trap

Confirming-evidence

The tell

You're gathering support for an option you've already half-picked, and discounting what cuts against it.

The counter

We seek evidence that confirms what we want and downweight the rest. Ask what would change your mind, and have someone honestly argue the other side. (Smart Choices, Ch. 10.)

Smart Choices, Ch. 10 — the book
Trap

Overconfidence

The tell

Estimates and ranges are suspiciously tight — "it'll take about two weeks," full stop.

The counter

People set ranges far too narrow and are surprised too often. Stretch the high and the low until you’d genuinely bet the outcome falls inside. (Smart Choices, Ch. 10.)

Smart Choices, Ch. 10 — the book
Trap

Recallability

The tell

A vivid, recent, or dramatic event is dominating the estimate out of proportion to how often it really happens.

The counter

Easily-recalled events feel more likely than they are. Reach for base rates and the unmemorable cases, not just the story that comes to mind. (Smart Choices, Ch. 10.)

Smart Choices, Ch. 10 — the book