De Geus ran scenario planning at Royal Dutch Shell and this book grew from a Shell study of companies that had survived more than a century. The study found that the average life expectancy of a large corporation was well under fifty years while a small number had lasted centuries, and it asked what the survivors had in common.
He reports four characteristics. Long-lived companies were sensitive to their environment and adapted to changes in it. They were cohesive, with a strong sense of identity that employees shared and that made people willing to act for the company rather than only for themselves. They were tolerant, meaning they permitted activity at the edges that was not centrally controlled and that generated options. And they were conservative in financing, holding cash and avoiding debt so they could act when opportunities appeared and survive when they did not.
From this he argues for treating a company as a living community rather than as a machine for producing profit, and for treating profit as a requirement for survival rather than as the purpose. He connects this to his scenario planning work, arguing that the function of scenarios is not prediction but changing the mental models of the managers who use them, so that they recognise a situation faster when it arrives.
The Shell study is not published in full and the sample of centenarian companies is small and selected on survival, so the four characteristics are suggestive rather than demonstrated. The organic framing is asserted rather than argued. The material on learning, mental models and the purpose of scenario planning is the most durable part and has been influential well beyond this book.
Executives thinking about corporate longevity, balance sheet conservatism and how scenario planning actually changes decisions.
Chosen by shared topics, the entries that hold them, and the people who recommended both.

