Abstract
Isaac Asimov's The End of Eternity describes a futuristic human society ruled by "The Eternals" - an elite class trained to travel outside Time (i.e., in "Eternity") to make alterations in the Past, Present, and Future. The process would begin with the Observers - individuals who would travel from the Past to the Future and collect data which would be analyzed by a computer. The "All-when Council" would examine the results and determine the Minimum Necessary Change to create the Minimum Desired Response (e.g., both natural and man-made catastrophes would be removed from the past or prevented in the future). A Technician would then travel to the designated time and place to effect the "Reality Changes."