Roger Penrose

Sir Roger Penrose (born 1931) is a British mathematical physicist who shared the 2020 Nobel Prize in Physics for his work showing that black-hole formation is a robust prediction of general relativity. A collaborator of Stephen Hawking and inventor of the Penrose tiling, he has for decades pursued a heterodox theory that human consciousness cannot be reduced to computation.

Consciousness is not a computation

Penrose’s 1989 book “The Emperor’s New Mind” — written partly in reaction to claims that the brain is “just a computer made of meat” — argued that human understanding relies on non-computable processes, invoking Gödel’s incompleteness theorem. With anesthesiologist Stuart Hameroff he later proposed that quantum effects in the brain’s microtubules give rise to consciousness. The theory remains contested, but Penrose has never wavered from its central conclusion.

That view makes Penrose a persistent skeptic of the language surrounding large models. To him, a system that calculates without understanding is clever, not intelligent — like a mathematics student who can reproduce a technique flawlessly while grasping none of it. His objection is philosophical rather than economic or political: he does not fear the machines so much as insist we are misdescribing them, a stance that puts him at odds with consciousness-agnostics like Richard Dawkins.