But even if one accepts this somewhat tortured explanation, no one can account scientifically for the link between brain events and thoughts. Though we know that chemical processes in the brain are involved in thoughts, that does not prove that they are fully created by them. Nor has anyone shown how electrochemical events could produce what we call thoughts. So consciousness can’t be explained simply as a means to reproductive fitness, nor can anyone explain how neurochemistry produces subjective experience. Many scientists insist, however, that it is only a matter of time before we
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