Silicon Valley Confronts the Singularity

For decades, Silicon Valley anticipated the moment when a new technology would come along and change everything. It would unite human and machine, probably for the better but possibly for the worse, and split history into before and after. It could happen in several ways. One possibility is that people would add a computer's processing power to their own innate intelligence, becoming supercharged versions of themselves. Or maybe computers would grow so complex that they could truly think, creating a global brain.