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Logic Machines

The ancient idea of a device which would test the validity of a system of thought has recently made progress. A very simple machine can be made from page 71 of this magazine

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Scientific American Magazine Vol 186 Issue 3This article was originally published with the title “Logic Machines” in Scientific American Magazine Vol. 186 No. 3 (), p. 68
doi:10.1038/scientificamerican0352-68