The mind consists of sensations, thoughts, cogitations, intentions, feelings. How could these inner mental capacities, these felt experiences, be produced by the three pounds of rubbery moist meat encased in our skulls? What must the brain do to generate the mind? Is it even possible for mental experiences to be produced by physical brains alone?

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Stuart Hameroff, MD, is a physician and researcher at the University Medical Center at the University of Arizona.

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