`The most helpful suggestion I can give potential readers is this: start reading. From the opening paragraphs, most readers will sense that they are safe in the hands of a skilled expositor who has hold of an important problem - and who, it subsequently turns out, has attacked that problem by deploying a substantial battery of research skills with notable theoretical and methodological sophistication. The result is a set of findings that challenge conventional wisdom about the problem of intrafirm transfer of best practice, and provide important insights into related issues in the theory and practice of strategic management. This is not only a fine contribution to the literature of strategic management, but also a welcome addition to the empirical literature relevant to evolutionary economics. There, it falls under the rubric of "replication of routines" - a rubric broad enough to encompass not only Szulanski′s topic, but also the problem of sustaining an ongoing productive performance at a given site, the problem of creating a productive facility at a new site by copying an existing one, and the problem of moving from prototype levels of production to full production of a new product. Although these problems are far from identical, there is substantial overlap among the issues they raise, both in theoretical and practical terms. Szulanski′s work offers a uniquely valuable perspective; the companies he studies are aware of the potential benefits of intrafirm transfer of superior practices, and generally quite familiar with the use of benchmarking as a management tool. For several reasons, one should expect transfer to be substantially facilitated in Szulanski′s setting relative to more typical settings. He finds, nevertheless, clear indications of the difficulty of transfer and provides a fascinating diagnosis of the sources of difficulty. These findings throw some light on the entire range of replication problems, and suggest fruitful lines for further inquiry into these important issues. Although the author displays appropriate scholarly caution in interpreting his results, there is guidance available here even for the manager who must start planning a major transfer effort tomorrow morning. The rocks and the whirlpools are not convincingly located on the conventional maps; this new map is a better bet. It has been my privilege to interact with Gabriel Szulanski as his work has progressed. I am now pleased to recommend this work to all scholars and managers who recognize that the creation and transfer of productive knowledge is central to their concerns, and are prepared to confront the subtle challenges that knowledge management presents′ - Sidney G Winter, Deloitte and Touche Professor of Management, The Wharton School, University of Pennsylvania
