CASE FILES / CASE 001 · COPYWRITING / BRIEFING 05
Briefing 05 of 10 · Principle 5

Back Up Your Big Claims (Or Nobody Believes You)

The bigger the promise, the bigger the pile of proof.

ABOUT 2 MIN READ1 INTERCEPTED REWRITE1 FIELD MISSION

Here's an uncomfortable truth: the better your offer sounds, the less people believe it.

You might have a product that delivers incredible results. But the moment you say so, people assume you're exaggerating.

How to close the belief gap

Every bold promise needs proof. Think of it like this: your claim is the accusation, and you're the barrister who has to prove it beyond reasonable doubt. Here's your evidence kit:

  • Explain the mechanism. Don't just say it works. Show how it works. A reason why is far more believable than an exclamation mark.
  • Show social proof. Other people have done this. Show their results, their faces and their real words.
  • Reverse the risk. Put your money where your mouth is with a guarantee that takes the risk off the buyer.
  • Provide evidence. Screenshots, case studies, before-and-after photos, data, certifications. Stack them up.

The bigger the promise, the bigger the pile of proof needs to be. It's that simple.

Mechanism + social proof + risk reversal + evidence = belief.

Never invent proof. Fake testimonials and made-up results are dishonest, and in the UK they can also break consumer protection law.

— Intercepted copy

Before and after

INTERCEPTED

Our programme will transform your public speaking skills in 30 days.

REWRITE

Our programme will transform your public speaking in 30 days. Here's how: you record three speeches, and our software analyses 47 factors, from filler words to eye contact, that separate great speakers from average ones. Then you get a personal practice plan. Take James, a software engineer whose hands shook every time he presented. After 30 days he gave the keynote at his company's conference to 500 people. Finish all 30 days and don't feel dramatically more confident, and we'll refund you in full. Here's James's case study, with his before and after videos…

QUICK TEST

Look at your biggest claim. Which of the four proof types follow it? Fewer than two, and it isn't believed yet.

— Briefing 05

Field mission

Take your single biggest claim and build its case, using only proof you genuinely have.

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