One does not have to be a natural scientist or a science writer to appreciate the possible benefits of biotechnology for the developing countries, but one cannot be a social scientist without being apprehensive about the costs and unforeseen consequences these almost miraculous advances may entail. In the past few decades, it has become obvious that development or modernization is much more complex and harder to achieve than was often supposed when decolonization inspired hope that economic growth could be achieved rapidly, and that with it would come social as well as material progress. In most, though not all, of the developing countries, sustained and balanced economic growth has so far not been attained, for reasons that include inability to control population growth, poor climate and soil conditions, inadequate energy resources, and—no less important—the difficulty of transforming and adapting traditional cultural values and social structures. These deeply entrenched social conditions often frustrate efforts of reform, whether they are aimed at increasing average per capita income or at assuring fair distribution of the benefits of economic growth.