As relevant today as when it was first published in 1965 by Harper and Row, this book looks at the 20th century as a critical era in the great transition from a civilized to a post-civilized society. The 20th century itself is seen as an ongoing evolutionary process. The author focuses on three "traps" which would prevent this transition from taking place: the "war trap", the "population trap", and the "entropy trap". And he outlines strategies for the 21st century for overcoming these traps.