On 9/27/2012 9:52 AM, Bruno Marchal wrote:
I object to the idea that consciousness will cause a brain or other
machine to behave in a way not predictable by purely physical laws.

But this cannot be entirely correct. Consciousness will make your brain, at the level below the substitution level, having some well defined state, with an electron, for example, described with some precise position. Without consciousness there is no "material" brain at all.

Why would the state be well defined *below* the substitution level? The substitution level is classical or near classical and so already QM implies that there is a lower level where the state is not well defined.


Of course, you will argue that this is what physics already describes, with QM. In that sense I am OK, but consciousness is still playing a role, even if it is not necessarily the seemingly magical role invoked by Craig.

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