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Systems with unknown behavioral properties require the implementation of iterations which are intrinsic to the design process but which are normally hidden from view. Certainly when a solution to a well-understood problem is synthesized, weak designs are mentally rejected by a competent designer in a matter of moments. On larger or more complicated efforts, alternative designs must be explicitly and iteratively implemented. The designers perhaps out of vanity, often are at pains to hide the many versions which were abandoned and if absolute failure occurs, of course one hears nothing. Thus the topic of design iteration is rarely discussed. Perhaps we should not be surprised to see this phenomenon with software, for it is a rare author indeed who publicizes the amount of editing or the number of drafts he took to produce a manuscript.
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"A Managerial View of the Multics System Development", Conference on Research Directions in Software Technology, Providence, Rhode Island, October 10-12, 1977 published in Research Directions in Software Technology (1978), P. Wegner (ed.), MIT Press, ISBN 0262230968, pp. 139-158. Also reprinted in Tutorial: Software Management, Donald J. Reifer (ed.), IEEE Computer Society Press, (1979, 1981, 1986)

 

Fernando J. Corby Corbato

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Software has to be designed by hackers who understand design, not designers who know a little about software. If you can't design software as well as implement it, don't start a startup.

 

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I was very much amused by the recent Newsweek article where he [Jobs] said, "I have a few good designs in me still." He never had any designs. He has not designed a single product. Woz (Steve Wozniak) designed the Apple II. Ken Rothmuller and others designed Lisa. My team and I designed the Macintosh. Wendell Sanders designed the Apple III. What did Jobs design? Nothing.

 

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