I recently performed a CT scan on Neskhons, an Egyptian mummy who I brought to our scanning facilities at Baylor College of Medicine.  

To the extent that consciousness is useful, it is useful in small quantities, and for very particular kinds of tasks. It's easy to understand why you would not want to be consciously aware of the intricacies of your muscle movement, but this can be less intuitive when applied to your perceptions, thoughts, and beliefs, which are also final products of…