How many of this week's decisions were based on something you checked?

Think of the last five decisions you took about the business. For each one, ask whether you checked something or whether you knew.

Most will be knew. That is not a criticism. Experience is real, it is usually right, and a business run by somebody with twenty years of judgement will beat one run by somebody reading charts.

The problem is narrower than it sounds.

Where experience quietly stops working

Experience is a pattern built from what you have seen. It is accurate as long as conditions resemble the ones that built it.

When something changes slowly, experience does not notice, because it has no way to notice. The product that was your best seller three years ago still feels like your best seller. The customer who was reliable still feels reliable. The channel that brought work still feels like it brings work.

Each of those can quietly stop being true, and nothing announces it. The first signal is usually a bad quarter, by which time the change is a year old.

The useful combination

This is not a case for replacing judgement with numbers. A number tells you what happened. It cannot tell you why, and it has never met the customer.

What works is checking the handful of beliefs that everything else rests on. Which product actually makes the most money. Which customers have slowed down. Where enquiries actually come from. Whether the thing everybody says about the market is visible in your own figures.

Four or five beliefs, checked twice a year. That is enough to catch the slow changes while they are still cheap.

Write down three things you are certain about in your business. When did you last check any of them?

Checking the four or five beliefs a business is built on, against its own figures, is a short piece of work with long consequences. Tell us your three and we will help you test them.