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The lack of time affects both preflight training for, and in-flight operation of, the experiment. This difficulty with time is currently true with the Space Shuttle Program and will persist with the advent of Space Station Freedom operations. Another key factor in space experimentation is the use of fixed experiment protocols. This major constraint severely limits the ability of an earthbound scientist to change the course of an experiment even when the data and current situation clearly indicate that it would be scientifically more valuable to do so. The goal is to help the astronaut become a scientific collaborator with the ground-based principal investigator who designed the experiment.