<i>if by unhappy chance it turns out that some of the quantum details of the brain&#x27;s state are important to the mind, then it&#x27;s possible we may simply never be able to copy a person.</i><p>I should think that such a circumstance would mean we wouldn&#x27;t be able to copy a <i>consciousness</i> while being able to copy the <i>mind.</i> Of course, this would bring in to question exactly what <i>person</i> would mean.