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We must pause with awe when it comes to the human brain. We must wonder to contemplate the marvels and mysteries of the three pounds of pinkish-gray tissue contained within our heads. The brain contains upward of 12 billion nerve cells, each of which may potentially be linked to countless others. Possible "telephone connections" in switchboards of the brain are so numerous as to be incomprehensible. A credible estimate sets the figure at 10 fo...

Our sister is our partner in crime, our midnight companion, someone who knows when you are smiling, even in the dark. She is our teacher, our defense attorney, our personal press agent, even our shrink.