what he actually said: "as long as the physical error probability ε is small enough" you can build a reliable system from unreliable parts. So it remains for y

what he actually said: "as long as the physical error probability ε is small enough" you can build a reliable system from unreliable parts. So it remains for you to show that AI.ε ~= QC.ε since JvN proved the case for a system made of similar parts, that is vacuum tubes, with the same error probability. (p.s. thanks for the link)