Most founders write marketing copy they are proud of.
That is the first mistake.
If you are proud of your copy, chances are you wrote it for yourself. You wrote it because it sounds sharp, or credible, or impressive. You wrote it the way you would want to be talked to. And in doing so, you forgot the only person who matters: the buyer who cares nothing about your interests or your pride. They care about what serves them.
I spent decades measuring advertising results. Every headline I wrote was keyed. Every offer was tracked. Every claim was tested against a control until I knew which words pulled and which did not. And the single lesson that returned more reliably than any other, across product after product, was this:
Specificity sells. Generality does not.
The salesman’s standard
Think about what a salesman does in person.
He does not stand in front of a prospect and say, “This is the best product on the market.” He does not say, “Our quality is unmatched” or “Trusted by thousands.” He knows those phrases are dead on arrival. The prospect has heard them from every competitor.
Instead, the good salesman gives a reason. A real, specific, verifiable reason. He says something like: “This will cut your processing time from four hours to forty minutes. I have seen it do this for three companies exactly like yours.” He does not argue. He does not entertain. He gives the prospect something solid to hold.
Copy is salesmanship in print. Nothing more and nothing less. The moment you forget that, you are no longer writing to sell. You are writing to perform. And performers do not close business. Ads are not written to entertain. When they do entertain, the people they attract are rarely the people you want.
What platitudes cost you
Platitudes and generalities roll off the human understanding like water from a duck. They leave no impression whatever.
That is not a preference. That is a law.
When you say “best in class,” you have said nothing. When you say “innovative solution,” you have said nothing. When you say “trusted by founders everywhere,” you have said nothing that any single person believes, because there is nothing specific enough to believe.
The irony is that these phrases feel safe. They feel like the language of a serious company. But the buyer reads them and discounts everything that comes after. Vague language signals a careless relationship with the truth. The reader becomes suspicious. You have done the opposite of what you intended.
Superlatives cost you the sale.
The reason-why principle
Give people a reason.
Not an impression. Not a brand feeling. Not a positioning statement crafted by committee. A reason. A concrete, specific, checkable claim that tells the buyer exactly what your product will do for them and why it works the way it does.
A shaving product I once wrote copy for had been selling modestly for years. The product was genuinely good. But the advertising talked about smoothness and freshness and luxury, the same words every competitor used. I went to the manufacturer and asked one question: what does this product actually do, mechanically, that others do not?
The answer came back in precise terms. The soap multiplied itself into lather 250 times. It softened the beard in one minute. It maintained creamy fullness for ten minutes on the face. Those were not claims anyone invented. They were facts.
I published those facts. Exactly as stated. And the product became a market leader.
The reason-why principle is not about finding the most emotional benefit. It is about finding the most specific true claim and stating it plainly, in the language of proof.
The test settles it
Here is where most founders go wrong a second time: they argue.
They sit around a table and debate whether the headline should say “reduce churn” or “keep your customers longer.” They spend weeks deciding between two subject lines. They get strong opinions from advisors, investors, and peers, all of whom have a different view.
None of this matters. The buyer is the only judge.
Almost any question can be answered, cheaply, quickly, and finally, by a test. That is the way to answer them, not by arguments around a table. Go to the court of last resort: the buyer.
If you have fifty customers, you can test. Send version A to twenty-five. Send version B to twenty-five. Measure which caused more people to click, reply, upgrade, or refer. The answer is not a matter of taste. It is a matter of evidence.
Stop protecting your copy. Treat every word as a hypothesis. Claims should be tested, not defended.
The 0-1 translation
You have ten customers. Maybe twenty. You think these principles do not apply to you yet.
They apply to you first.
When you are closing your first ten customers, you are a salesman in every conversation. You hear exactly what makes people hesitate and exactly what makes them say yes. That information is the raw material for reason-why copy.
Go through every sales conversation you have had. Find the moment where the prospect’s posture changed. Find the sentence that caused them to lean in. That sentence is almost always specific. “We will migrate your data in three hours.” “You will see your first result in one day, not three weeks.” “The only thing you need to start is a spreadsheet you already have.”
That is your copy. Not invented. Not polished until it no longer sounds human. Extracted from the exact words that moved real buyers.
Write down every specific claim that caused a yes. Put them in your headlines. Put them in the first sentence of every email. Stop leading with the category and the credential and the story. Lead with the reason.
The person reading your page cares nothing about your journey or your team or your vision. They are asking one question: what does this do for me, specifically, and why should I believe you?
The only question that matters
What is the specific reason your product works?
Not a benefit. Not a story. A reason. A fact. A mechanism. The thing that is true about how your product delivers the result, stated so precisely that anyone reading it can picture the outcome.
Find that. State it plainly. Test it.
Everything else is performance.
Performance does not close business.