In The Sleepwalkers and The Act of Creation Arthur Koestler provided pioneering studies of scientific discovery and artistic inspiration the twin pinnacles of human achievement. The Ghost in the Machine looks at the dark side of the coin our terrible urge to selfdestruction.ampampampnbspCould the human species be a gigantic evolutionary mistake To answer that startling question Koestler examines how experts on evolution and psychology all too often write about people with an ampampamplsquoantiquated slotmachine model based on the naively mechanistic worldview of the nineteenth century. His brilliant polemic helped to instigate a major revolution in the life sciences yet its ampampamplsquoglimpses of an alternative worldviewampampamprsquo form only the background to an even more challenging analysis of the human predicament.