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Iterative design has been strongly recommended as part of a basic design philosophy for building measurably easy-to-use computer software. Iterative design was a major technique for meeting the specified usability goals for Eve, a new text editor for the VAX/VMS operating system. There was no adverse effect on the project schedule. Users' problems followed similar patterns to those encountered in earlier laboratory experiments on operating systems.
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Michael Good (1985) studied this question.
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