Bruce Sterling has written three non-fiction books. This is his second and was published in 2003. It's a multilayered work, with seven stages (chapters) based on William Shakespeare's As You Like It, in which Jaques's monologue outlines the seven ages of man as infant, schoolboy, lover, soldier, justice, and at the end of life. Through each stage, Sterling looks at current (at the time) research and runs it out 50 years, to the middle of our century, attempting to paint a picture of how our lives will change.