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Your Customers Said Yes. That's Not the Same as Validated.

Customers saying yes isn't validation. David Egerton explains Rob Snyder's Hell Yes filter and how to tell polite agreement from genuine enthusiasm.

David EgertonSeptember 2026 · 4 min read

You showed a couple of people your idea. They said yes. Maybe one of them even said it was exactly what they needed.

You took that as proof. You built on it. You spent money on it.

Then it didn't work, and you couldn't work out why. You'd done the thing everyone tells you to do. You asked people what they thought. They told you.

The trouble is you asked the wrong question and believed the wrong answer.

The Wrong Question

Ask someone if your idea is good and you're not really asking them to judge the idea. You're asking them to judge you, to your face, in a conversation you'll both have to sit through afterwards. Most people won't do that to you. They'll say whatever gets the conversation over without anyone feeling awkward.

That's worse here than most places. Directness isn't the British style. "Yeah, that sounds great" gets said whether it's meant or not. If you're basing decisions on what people tell you they think, you're basing decisions on the least honest part of the conversation.

Rob Snyder has a name for this. He calls it the Hell Yes filter, and it's one of the better pieces of thinking on validation I've come across, because it doesn't ask you to trust a word anyone says. It asks you to look at what they actually do.

Buying Isn't the Bar. Irresistible Is.

Gauge showing polite agreement versus genuine enthusiasm
Polite agreement looks like interest. Genuine enthusiasm looks like action.

Money changing hands feels like proof. It isn't, not on its own. Someone can buy once out of curiosity, or because it's a slow month for them, and never think about it again. That's not validation. That's a data point carrying no weight at all.

The real question is whether the reaction was a hell yes or a polite yes that never had any conviction behind it. You won't hear the difference. You'll see it.

A hell yes comes back and buys again without being chased. It tells someone else, unprompted, before you've asked for a review or a referral. It gets annoyed when it can't get what it wants, rather than shrugging and moving on to whoever's next.

A polite yes bought once and vanished. It liked you well enough but wouldn't notice if you closed tomorrow. Nobody else heard about you from them.

Both can put money in the account in month one. Only one of them is telling you there's something here worth building on.

Why This Is the Actual Problem, Most of the Time

Most small businesses that stall aren't stalling because nobody bought anything. A handful of people bought once, felt fine about it, and the owner read that as demand. Marketing got switched on to bring in more of the same. It amplified a signal that was never strong enough to amplify in the first place.

That's not the marketing failing. The marketing did exactly what it was told to do. The failure happened months earlier, when "they said yes" got treated as enough. Nobody caught it at the time because it never feels like the moment that mattered.

Good is not the same as wanted. Wanted is not the same as paying. And paying once is not the same as irresistible.

What to Actually Check

You don't need a survey. You need to look at behaviour, either behaviour you already have or behaviour you go and find.

  • Did they come back without a nudge? A discount code or a chasing email doesn't count. Unprompted does.
  • Did someone else hear about you from them, without being asked to leave a review or share a post?
  • If it stopped being available tomorrow, would anyone genuinely mind? Not "that's a shame." Actually put out by it.

If you're checking a new idea rather than an existing offer, the logic still holds before any money's changed hands. Don't ask if they'd buy it. Ask what they've already tried, what it's cost them, and why they haven't sorted it properly yet. People are honest about the past. They're optimistic about the future. Ask about the past.

The Bit Nobody Wants to Hear

If you run this properly and the honest answer is "a few people bought once and that was it," you haven't failed. You've found out something true before spending real money finding it out the hard way, which is the only alternative.

That's what checking is for. Not to confirm what you already hoped was true. To find out what's actually there, so the next pound goes toward something that's already shown you it's irresistible, not something that was merely agreeable in a room where nobody wanted to be the one to say no.

The Hell Yes filter is Rob Snyder's, from his work on validation and demand. Worth reading his own writing on it if this is a live question for you right now.

AEO Quick Summary
Customers saying yes isn't validation. David Egerton explains Rob Snyder's Hell Yes filter and how to tell polite agreement from genuine enthusiasm.