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mwengler comments on Beyond the Reach of God - Less Wrong
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Chad: if you seriously think that Turing-completeness does not imply the possibility of sentience, then you're definitely in the wrong place indeed.
Is there a FAQ or reference somewhere on why or how Turing completeness implies sentience? I know there are some very bright rational people who don't believe turing completeness is enough for sentience (Searle, Penrose), you wouldn't want them active here? (By the way don't make the mistake of thinking " I don't believe turing completeness is sufficient for sentience" is equivalent to " I believe turning completeness is not sufficient for sentience." I don't know either way, but it sure seems that "knowing" is more like religious belief than rational deduction.)
The basic idea is that a perfect simulation of a physical human mind would be sentient due to the anti-zombie principle. Since all you need for such a simulation is a Turing machine, it follows that any Turing machine could exhibit sentience given the right program.
I don't think Turing-completeness is sufficient for sentience either, just necessary; this is why I said 'possibility'.