freeze...thaw...freeze at water's edge

"Your brain is three pounds of tissue containing 1.1 trillion cells, including 100 billion neurons. The number of possible combinations of 100 billion neurons firing or not is approximately 10 to the millionth power, or 1 followed by a million zeros, in principle; this is the number of possible states of your brain. To put this quantity in perspective, the number of atoms in the universe is estimated to be 'only' about 10 to the eightieth power."

Rick Hanson