"Both the tech-happy and the tech-wary will find news in this view of technology as an evolutionary system. Fascinating case studies show how society-bending inventions - even 'breakthroughs' - proceed from small, incremental variations upon earlier inventions." Whole Earth Catalog
Preface; 1. Diversity, necessity, and evolution; 2. Continuity and discontinuity; 3. Novelty: psychological and intellectual factors; 4. Novelty: socioeconomic and cultural factors; 5. Selection: economic and military factors; 6. Selection: social and cultural factors; 7. Conclusion: evolution and progress; Bibliography; Sources of questions; Index.