The partial implementations and designs that do not match

The purpose of this article is to compare and present how design theories and method can together develop and create a production system for industrial companies. The author compares design theories and tries to conclude if applying theory reflects in practice. Theory is described as a broad definition according to the author where method is a part of theory as design method. Three parameters of design methods are focused in relations to consistent production organisation. The reason why is not clear.Holistic theories and partial theories and methods lack adequate theories. This shows that the current design methods lack either detail, range, scope or even a combination of these three parameters. This concludes that it might not automatically mean that there is a problem in making consistent design, only that the theory has simply not caught up with practice.To know the difference between different design theories and methods. Theory and design methods are grouped according to the author and they are discussed to illustrate properties of the theory that are grouped. The author characterises three different parameters for each theory:1. Their Scope (”which elements/functions are included in the theory”)2. The Range of theory (The extent of environmental diversity for which the theory is valid and should arrive at a suitable design3. The level of aggregation: how detailed are the proposed design solutions.Theories and methods are summarized by illustrating the parameter (scope, range, detail) in a table and grade them between very high and very low.This chapter has a qualitative approach with an inductive reasoning. However, the conclusion, as mentioned before is that adequate theories are missing and reflects in practice. This results to the partial implementations and designs that do not match with needs. To design production system and organisation, holistic theories can be used and the authors and discuses organisational theory, marketing theory and operation management.The author discusses in the first subsection, organisational theory, marketing theory and operation management (which is separated into two groups, Design frameworks and strategies & Philosophies with sets of technique and methods). They have contributed a lot from several researches and the author refers to other articles. Mintzberg is one of them and is well known in organisation theory. The authors move on to discuss Partial theories and methods and focuses on this subject in relations to the link with the market, internal relationships and the limitation in making the design. Similar theoretical approach is made in the second subsection and a summary and grading shown.To find out real data and confirm if it works in practice, the author suggests a direct investigation with companies as they are occupied in the design process and give answers to how companies design their production system, if the results are successful or if design methods are sufficient to make a successful design etc.