Falsifiability

What Falsifiability means

Falsifiability is the test of whether a claim could ever be shown wrong: a real claim rules something out, and a claim that fits every possible outcome has told us nothing. The definition is quick. Owning it changes what impresses us. We start to ask, of any confident statement, what we would expect to see if it were false, and we notice when the answer is nothing at all. We stop being reassured by explanations that stretch to cover every result. Before: the theory that explains everything sounds like the strongest one in the room. After: the strongest claim is the one that stuck its neck out, could have been broken, and was not.

Not to be confused with

Falsifiability is not verification. A claim is verified when evidence supports it, and almost any claim can find some. A claim is falsifiable when we can say in advance what would count against it. The second is the harder test, and the one that separates a theory from a story.

Falsifiability examples: where it shows up

• At work: the strategy that counts every outcome as progress, so no quarter can ever tell us it has failed.
• With money: the tipster whose calls come with an explanation for every miss, which is why the record never looks bad.
• In the news: the pundit who is never wrong, because every event was, in hindsight, exactly what they meant.

Where it sits

Concept 2 of 5 in The Art of Questioning, a journey in the course The Examined Mind.

See where Falsifiability sits on the sky →

Nearest on the sky

• Burden of Proof
• Inversion
• Occam's Razor
• The Map Is Not the Territory
• First Principles Thinking
• Abductive Reasoning

A filled dot marks a star that is already open to walk.