Can humans escape Gödel? A Review of Shadows of the Mind by Roger Penrose
McCullough (Daryl)
Source: Psyche, 2(4), April 1995
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Introduction (Full Text – “Gödel's Theorem And The Mind”)

  1. In the first part of Shadows of the Mind, Penrose gives an argument that human reasoning must go beyond what is computable. Therefore, no computer program can ever hope to be as intelligent as a human being. Penrose doesn't give a direct argument for his thesis. He doesn't for instance, show that there is some task that humans can perform which no computer can. (Although he suggests without offering a proof that certain kinds of geometric visualization may allow us to deduce facts in an inherently noncomputable way.) Instead, Penrose uses an indirect proof-he assumes that there exists a computer program that is every bit as intelligent as a human, and shows that that leads to a contradiction.


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