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註釋Man's ability to live and perform useful work in space was demonstrated throughout the history of manned space flight. Current planning envisions a multi-functional space station. that would provide a base for the conduct of scientific experiments, manufacturing, satellite maintenance, large structure assembly, and the dispatch of vehicles to high Earth orbit and deep space missions. In deciding whether to allocate tasks to men or to machines, it is important to understand the capabilities and limitations of both. Man's unique abilities to respond to the unforeseen and to operate at a level of complexity exceeding any reasonable amount of previous planning distinguish him from present day machines. His limitations, however, include his inherent inability to survive without protection, his limited strength, and his propensity to make mistakes when performing repetitive and monotonous tasks. By contrast, an automated system can do routine and delicate tasks, exert force smoothly and precisely, store, and recall large amounts of data, and perform deductive reasoning while maintaining a relative insensitivity to the environment. The establishment of a permanent presence of man in space demands that man and machines be appropriately combined in space-borne systems. To achieve this optimal combination, research is needed in such diverse fields as artificial intelligence, robotics, behavioral psychology, economics, and human factors engineering.