Improvisation in project management: A praxeology L. Klein, C. Biesenthal and E. Dehlin, International Journal of Project Management, volume 33, pages 267-277, 2015 Background Software development projects are inherently complex. Attempts have been made to aid project managers in controlling this complexity by developing tools. These tools are processes, procedures and techniques (L. Klein et al. 2015, p. 267). According to the authors nine different schools of project management can be identified. All of these nine schools address different problems of the project management. Combinations of multiple schools and improvisational practices are suited to addressing complexity. The aim of the article is to develop “a praxeological meta-theory” that provides the inclusion of all the currently known project management information in relation to the context in which it is used. Praxeology is a deductive reasoning based on the assumption that humans act in a rational way. Results Project managers simply rely on their knowledge rather than being guided by a strict protocol or tool. This type of behavior can be described as improvisation; an aspect of project-management practice that has not been sufficiently addressed in the dominant project-management theories (L. Klein et al. 2015, p. 269). According to L. Klein et al. 2015 project management can be divided into the nine schools: Optimization, Modelling, Governance, Behavior, Success, Decision, Process, Contingency and Marketing. These major schools of project management portray the difference and variety of current knowledge used in project management combining all of these approaches into one skeleton. According to the authors the main focus of for example the Optimization school is to optimize project duration by mathematical processes and gain performance in time. On the other hand, the main focus for example the Behavior school is to manage the relationships between project members and enhance performance with project members. In the real world one school of project management might or might not help at all. Improvisation has been categorized in four degrees. The first degree of improvisation takes place in a context where project-management tools are follow very strictly (L. Klein et al. 2015, p. 271). This means that strict and linear approach where managers follow the project plan or the process, but use their knowledge and expertise of improvisation when applicable to fine tune ongoing project. The second degree of improvisation describes the application of bricolage, a method that merely uses existing resources to accomplish a successful project (L. Klein et al. 2015, p. 271). This means a pragmatic mindset with contextual use of existing tools. The third degree of improvisation describes a pluralist approach to project management to solve a particular problem (L. Klein et al. 2015, p. 271). The last and fourth degree of improvisation describes a potentially radical departure from the existing plan (L. Klein et al. 2015, p. 271) and means heuristic practices with pragmatic context. All improvisation degrees can be used to provide a support for project managers during the development process creating flexible behavior and allowing out-of-the-box thinking. According to the authors (p. 274) the improvisation transforms best practices, as proposed by the different theories, into context-dependent practical tools for successful project management. The authors contribute to the current debates in project management and the initiated practice-turn (L. Klein et al. 2015, p. 276). The approach, a praxeology, used in the article is a deductive study of human actions and was used to improve understanding of project management. The version of praxeology used by the authors combines theoretical knowledge and improvisational practice by using the multiplicity of existing project management theories. Conclusions The authors come to the conclusion that there is no silver bullet: no one tool or school of thought solves all problems at all times. The proposed improvisation is needed to select the right tool or approach in any situation. The authors go on to propose the creation of a book of knowledge that contains multiple theories and approaches to solving project management problems. Kari Meriläinen