Many founders and product leaders launch products that underperform, despite early signs of validation. The culprit is almost always the same thing: confirmation bias rooted in a failure to distinguish between two words that sound similar but mean very different things.
When someone says your product is interesting, they are expressing polite curiosity. When someone is interested, they see a specific solution to a specific problem they have and want to know more about how your product solves it.
The trap is that interesting conversations feel productive. You get on calls. People engage. They say encouraging things. But the conversation never goes deeper. Nobody asks about pricing, timelines, integration, or what it would take to move forward. You walk away feeling validated when you should be feeling concerned.
Genuine interest looks different. A truly interested buyer asks second-level questions. They want to know when it will be available. They ask how it fits with what they are already using. They bring in other stakeholders. They start thinking out loud about what switching would look like.
To get past surface interest, you have to ask qualifying questions directly. What problem would this solve for you? How are you solving it today? What does that cost you — in time, money, or opportunity? What would you pay for something better?
Without those questions you only have someone who finds your product novel. They may take your call out of professional curiosity but they have no intention of buying.
The founders who build products that actually sell learn to disqualify polite interest early. They stop counting conversations as progress and start counting qualified pain as progress. Those are not the same thing.