Persistence is evidence.

There is a familiar argument in business that persistence should not be confused with evidence. If something has not worked for years, the fact that we are still working on it does not make it more likely to work tomorrow.

That is true, but incomplete. It assumes that persistence means doing the same thing repeatedly and waiting for a different result. Sometimes persistence is the process through which the evidence is produced.

An idea meets the market and something does not work. The product changes. The price changes. The financing fails and the structure changes. A customer says no for a reason you had not considered. An investor likes the market but not the model. A transaction gets close enough to expose a problem that was invisible from the outside.

None of these is success. But neither is it nothing. Over time, what survives repeated contact with reality becomes interesting.

This is especially true when the thing being built has a long feedback cycle. Not every proposition can be validated by putting a product on a table and asking whether somebody will buy it. Some require counterparties, capital, trust, regulatory structures or transactions that take months to form.

In those situations, the absence of an immediate result is not necessarily evidence of the absence of value. The important distinction may therefore be between repetition and persistence.

Repetition protects the original idea. Persistence allows it to be destroyed, rebuilt and sometimes replaced entirely.

That is a much harder form of persistence because it requires keeping the ambition while surrendering the assumptions that once seemed essential to it. After enough iterations, the thing that remains may look very different from the thing that started the journey.

And that is the evidence. Not that the first idea was right. But that something kept surviving the process of finding out why it was wrong.