This book aims to help all those people involved withinformation systems to break that repeating pattern offailure. Using real life examples it introduces asophisticated approach based around the notion of system to come togrips with the causes of actual and potential failure. Itpresents a model of a system capable of action without failure thatcan be used as a yardstick to judge existing and plannedinformation systems and suggest measures that need to be taken toachieve success.