This volume would not have been possible without the ideas and facts developed by numerous individuals and organizations over many decades. I merely assembled the separate components of the puzzle of human existence and survival. The support and suggestions of my spouse, Sandra, were most helpful.

Special thanks are due to Edward S. Cornish for introducing me to the concept of alternative futures; Stuart S. Nagel for his development of the idea of super-optimum solutions that made my proposals feasible; and Robert V. Head for his editorial and intellectual inputs.


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