Ray Kurzweil, noted inventor and futurist, is a man who refuses to accept physical reality and the inevitability of death. Instead, he claims that the trending exponential increase in the growth of information technology can continue indefinitely, and that a so-called "singularity" will emerage—a point where humans and machines will converge, allowing one to "transcend" biological "limitations." But there are many who share deep concerns about the consequences of working towards Kurzweil's world...