John Searle (1932–2025) was born in Denver, studied speech-act theory at Oxford under J.L. Austin, and spent nearly his entire career at Berkeley. After Speech Acts (1969) developed his theory of speech acts, in the 1970s Searle turned to philosophy of mind; in 1980 he published 'Minds, Brains, and Programs' in Behavioral and Brain Sciences — together with a long array of peer commentaries. The 'Chinese Room argument', at the centre of artificial-intelligence debate ever since, was in that paper.

The thought experiment is simple. A person who knows no Chinese sits in a room. From outside, slips of paper with Chinese questions are passed in; the person has a vast Chinese-to-Chinese lookup book — a manual of rules. The person matches shapes on the slips to shapes in the book and passes new slips back out. Chinese readers outside take the responses for fluent Chinese. But the person inside has not learned a single word of Chinese — they have manipulated shapes according to rules, and that is all. The digital computer, Searle argues, is precisely this room: it works on syntax and at no point crosses over to semantics — to real understanding.

The argument targets the 'strong AI' thesis: a properly programmed computer literally has a mind and thinks. Even the strongest Turing-test performance does not vindicate that conclusion, Searle says; the Turing test measures behaviour (responses produced by rules), not understanding. The argument provoked a long series of replies: the 'systems reply' (room + book + person as a whole understand Chinese), the 'robot reply' (a system embodied and embedded in the world has semantics), the 'brain simulator reply'. Searle answered each. The Chinese Room is one of the founding coordinates of today's debates over AI ethics, large language models, and machine consciousness.