ENCORE  Know your brain?  Think again.  Driven by a hidden agenda, powered by an indecipherable web of neurons, and influenced by other brains, your grey matter is a black box. To "know thyself" may be a challenge, and free will nonexistent, but maybe more technology can shed light on the goings on in your noggin, and the rest of your body. Find out how tiny implanted sensors called “brain dust” may reveal what really going on. Plus, the day when your brain is uploaded into a computer as ones and zeros.  Will you still be you? Guests: David Eagleman – Neuroscientist, Stanford University, author of The Brain: the Story of You. Michel Maharbiz – Electrical engineer, University of California, Berkeley.