Analytical and Interpretive Practices in Design and New Product Development Evidence from the Automobile Industry
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Analytical and Interpretive Practices in Design and New Product Development Evidence from the Automobile Industry by Kamal M. Malek S.B., Mechanical Engineering Massachusetts Institute of Technology, 1982 S.M., Mechanical Engineering Massachusetts Institute of Technology, 1985 Submitted to the Department of Mechanical Engineering in Partial Fulfillment of the Requirements for the Degree of DOCTOR OF PHILOSOPHY at the MASSACHUSETTS INSTITUTE OF TECHNOLOGY June 2001 ARCHIVES © 2001 Kamal M. Malek. All rights reserved. The author hereby grants to MIT permission to reproduce and to distribute publicly paper and electronic copies of this thesis document in whole or in part. Author: - Signature of - -- wv - A /MIT Deppinelt ofanical Engineering March 2001 / Certified by: Richard K. Lester Professor of Nuclear Engineering . Thesis Supervisor Accepted by: Ain A. Sonin Chairman, Department Committee on Graduate Students 2 Analytical and Interpretive Practices in Design and New Product Development Evidence from the Automobile Industry by Kamal M. Malek Submitted to the Department of Mechanical Engineering in March 2001 in partial fulfillment of the requirements for the degree of Doctor Of Philosophy Abstract Product design and development have been studied from both positivist and interpretivist paradigms. From the positivist perspective, design and product development are seen as technical transformation or production processes, which take customer requirements and existing technological possibilities as inputs and produce an objectively optimal product, one that is not influenced by the designer's preferences or biases. The result of this research is a focus on measuring the voice of the customer with "high fidelity", and on streamlining and optimizing this production process. From the intrepretivist perspective, product design and development are seen as relatively open-ended discursive processes, to which human participants from different backgrounds bring their unique worldviews and prejudices. Models of these processes are seen as metaphors intended to help people come to understanding by shedding light on and thus bridging the different worldviews, not as mathematical constructs to be optimized. In real life, empirical evidence shows that practitioners rely on a number of approaches that do not fit easily into one or the other of these paradigms. As a result, many analytical models and methodologies need to be modified to make them useful in real-world applications and, coniverscly,empirical research that accurately captures the richness and complexity of the design and development process fits uneasily in these traditional paradigms which researchers feel compelled to use. This dissertation addresses this shortcoming by developing a vocabulary for describing product design and development practices, which bridges the divide between the strictly positivist and strictly interpretivist views. The research approach used is one of theory building from case studies. The industry chosen for the case studies is the automobile industry. The thesis reports on three study sites. The first is an American manufacturer based in Detroit, known for its innovative product designs and its pioneering reliance on dedicated platform development teams. The second is the American design subsidiary of a Japanese manufacturer, one of the first to set up such a design operation in US. The 3 third site is the Japanese design and development organization of the same manufacturer, based in a technical center outside of Tokyo. The theoretical framework presented in this dissertation, which co-evolved with the above case studies, takes the form of a taxonomy of product development practices. This taxonomy draws upon concepts from linguistics and the philosophy of language. In a first step, the distinction within linguistics between the structural sub fields (e.g., syntax and semantics) and the functional sub field of Pragmatics is used to sharpen the difference between analytical/structural practices on the one hand, and interpretive practices on the other. In a second step. two views of interpretation, one grounded in linguistics (Pragmatics. specifically). the other in the philosophical hermeneutics of Heidegger and Gadamer are used to expand the interpretive category into two, referred to as pragmatic interpretation and hermeneutic interpretation, respectively. Each of the three case studies provides a good illustration of a product development organization that relies predominantly on one of the types of practices and approaches captured by the taxonomy. The findings suggest a number of recommendations for design and product development managers and practitioners, as well as several directions for future research. Thesis Committee: Warren P. Seering (Chairman) Professor of Mechanical Engineering, MIT Richard K. Lester (Thesis Supervisor) Professor of Nuclear Engineering. MIT; Director. Industrial Performance Center Michael J. Piore David W. Skinner Professor of Political Economy. MIT 4 In memory of my father, Moussa A. Malek S 6 Acknowledgements I wish to thank the members of my thesis committee-Warren Seering, Richard Lester, and Michael Piore-for their wise advice, effective coaching, and continuous encouragement throughout this effort. Their steadfast support enabled me to complete this work despite the exigencies of the last few years. I am especially thankful to Richard and Michael for initially inviting me on this voyage of intellectual discovery, and for introducing me to a world of thought and knowledge of which I had not been cognizant. This research would not have been possible without the participation of a number of respondents-designers, managers, and executives-at the companies discussed in this thesis, and at the companies studied in the course of a larger project at the MIT Industrial Performance Center on the organization of design and product development. By generously giving of their time, and by sharing their experiences and insights, they provided the empirical material in which this research is grounded. This thesis would also not have been possible without the generous financial support provided me by the MIT Industrial Performance Center. I am grateful to my friends at MIT, and especially at the IPC, for cheering me on throughout this endeavor and for enriching my experience there. Finally, I would like to thank my friends and colleagues at NewcoGen and Affinnova-in particular Noubar Afeyan-for affording me the opportunity to complete this thesis while helping launch a new enterprise, thus giving me a chance to immediately put the knowledge gained during this research to good use. 7 8 Table of Contents Abstract ............................................................................................................... 3 Acknowledgements ............................................................................................ 7 Table of Contents .................................. .............................................................. 9 List of Figures ................................................................................................... 13 List of Tables ..................................................................................................... 14 Chapter I: Introduction ..................................................................................... 15 Background ................................................................................................................. 15 Example 1: A minivan development project......................................................... 16 Example 2: Who's still buying sports cars? . ........................................ 17 A Paradox in the Literature? ....................................................................................... 18 Different Paradigms ........................................ ......................................... 23 The design literature.............................................................................................. 23 The product development literature ...................................................................... 25 The Opportunity .......................................................................................................... 26 Research questions ......................................... 28 Approach ............................................................................................................... 29 A Preview of the Dissertation ......................................... 30 Chapter II: Research Approach ........................................ 33 The Larger Project....................................................................................................... 34 Theory Building and Case Studies ......................................... 36 Theoretical Framework ......................................... 38 Empirical Research ......................................... 39 The choice of industry ..................................................................................... 39 The cases ................................................................................ 43 Chapter III: Theoretical Framework ................................................................. 47 Background I: Linguistics ......................................... 50 Structural linguistics.............................................................................................. 50 Syntax .............................................................................................................