What Would Prove It False

Karl Popper’s test is blunt. A claim about the world should say what would make it wrong. If every possible outcome can be called a success, the claim explains nothing. It just soaks up whatever happens.

This is a test for empirical claims, not for every sentence. A definition, a moral commitment, and a poem are not waiting to be falsified in a lab. A forecast, a diagnosis, and a causal story are.

You do not have to defeat the claim today. You have to know what a defeat would look like. A claim with no imaginable defeat is not strong. It has never been put at risk.

The unfalsifiable coach

A coach says a wristband improves focus. When an athlete plays well, the coach credits the band. When the athlete plays badly, the coach says the band “was drawing out hidden stress, which is also success.” No game can embarrass the theory.

A falsifiable version would say, before the season, what result would count as the band failing. Until then it is a story with a trapdoor.

Try this today Ask of one claim today what result would prove it wrong.