For four decades, a controversial idea has shaped how autism is understood by researchers, healthcare professionals and the public: the claim that autistic people are “mind blind”. The phrase suggests an inability to grasp what others think or feel. It is simple, memorable – and wrong.
The claim rests on a concept called “theory of mind”. In everyday terms, theory of mind is the ability to recognise that other people’s thoughts, beliefs and emotions may differ from your own. This idea explains why someone understands that a joke can fall flat, that a promise can be broken, or that a friend can be mistaken without lying. It is often presented as the key to how people make sense of one another.
