The encyclopedia
Trust

The Sure Thing

The effect

"You pick the option whose risk you can describe over the one you can't."

The method

Given two options, people prefer the one with known odds — even when the unknown one is statistically better. Concrete guarantees, return policies, and FAQs reduce ambiguity and tip the choice.

White hat
2/10
Most common usage on the angel→devil scale
The ethics spectrum

Same hack. Three very different choices.

White hat

Real guarantees, clear cancellation, plain-language FAQs that surface objections.

Grey hat

Guarantees with so many exclusions they rarely apply.

Black hat

'Money-back guarantee' that requires steps almost no customer will complete.

The template

A formula you can steal

List [TOP 5 BUYER UNKNOWNS] → answer each in 1 sentence near the decision point.
Spotted in the wild

Where you've already seen this

  • Zappos' 365-day free returns — the policy is the marketing.
  • Casper's 100-night sleep trial collapsing the 'is it comfortable?' unknown.
  • Stripe's published, line-item pricing with no enterprise-quote dance.
When to use it

On any high-consideration purchase. The buyer's biggest objections are usually about risk, not features.

When NOT to use it

When you can't actually honor the guarantee. Broken promises here destroy more trust than not making them.

The 5-minute practice

Try the trick today

Write down the five questions a customer asks themselves before clicking 'buy'. Answer each in one sentence above the fold. Ship it.

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See it in action

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