When sales results depend on one person, the knowledge that matters is not product knowledge but a way of thinking, and it cannot be handed over with a catalog, a price list or a slide deck. I learned this through an experiment I never planned: everything in the business stayed the same except the person at the desk, and the customers followed the person.
Key facts
- Who this is for: owners, founders and leaders whose sales depend on one or two people
- The story: same product, market, competition and price list; only the seller changed
- What it showed: new hires knew the products and prices, but not how to hold the conversation
- The risk: knowledge locked in one head is a company's most critical point of vulnerability
- Source: the book Diagnostic Sales™ by Miroslav Ćurčić, chapters 1, 8 and 10
How did the experiment start?
I did not want to be a seller, but I knew I had to become one if I was going to succeed as an entrepreneur. I started out selling postcards and watches, then represented foreign companies, and then spent years moving up the ladder and sideways: marketing manager, project manager, and finally agile coach and trainer. I left the front line. Forever, I thought.
Then the family company went into a serious crisis, and I had to take over. After years away from sales, I sat down at the same desk again, across from the customer.
What changed when I came back?
Everything was waiting for me exactly as before: a product I had known for years, the same market, the same competition, the same price list. Only one thing had changed: me.
I no longer answered a question the moment the customer asked it. I no longer stated the price the moment they asked for it. Before every answer, I wanted to understand why someone was asking exactly that. I had brought this from coaching, at first without even noticing. Sales soon rose sharply, even though the market had not changed.
"All the variables were fixed except one — the operating system in my head."
What happened when new people took over?
The real proof came later, when I started hiring. Every new associate knew the products, the prices and the catalogs. They had access to everything except the answer to one question: how? And the customers walked away.
They did not walk away because the new people were bad. They walked away because the new people did what almost every seller does: they answered questions. Whenever I went back to the desk, the customers came back too.
The difference was never product knowledge. It was a way of thinking.
Why couldn't I just teach it?
I tried for years. Training after training, explanation after explanation. People nodded, and the next day they did what they had always done.
I thought it was intuition, and intuition does not transfer through presentations. We were all wrong. It was not intuition. It was a system I had been building for years, but it lived only in my head and got lost every time I tried to pass it on by talking about it.
That was the moment I understood that what I had seen as the company's strength was its weakest point. Later, I wrote it down in the book like this:
"Knowledge that stays locked in the head of one employee is not the company's competitive advantage, but its most critical point of vulnerability."
Is your company running the same experiment?
You may recognize some of these signs:
- the owner or one experienced seller sells brilliantly, and results drop when anyone else handles the customer;
- every serious inquiry ends up with the same two or three people;
- the owner personally reviews every important quote "to be safe" and has no time left for strategy;
- when an experienced seller or technician leaves, knowledge that was never written down leaves with them;
- onboarding takes months, and turnover has become normal.
Hiring one more person rarely fixes this. It adds complexity and postpones the next crisis. A system that depends on the mood, availability and luck of a few individuals is not a stable organization; it is a temporary solution with deferred payment.
What does sales knowledge transfer really mean?
It means the knowledge moves out of one person's head and into the structure of the company: into the team, into the way new people learn, and today also into AI systems that support the work. The goal is not to replace the expert. It is for what made one person good at this to stop depending on that one person.
That need is exactly why I wrote the book. It did not come from academic research or a consulting project. It came from a business that could not afford to depend on one person anymore.
Where to go from here
If your sales depend on one person and you want to change that, I would be glad to hear your situation. Get in touch, read more about me, or start with the book. For distributed teams, see how we work with international sales teams.