The principle of reasoned shape forming as a basis for plastic adequacy of design objects

The article highlights the basic approaches to configuring the form in design. The authors analyze the main strategies of shape formation in modern design practices. The novelty of the subject is that the analysis is carried out in the context of the adequacy of the design of plastic objects. The essence of the problems outlined by the authors is inconsistency between the object’s semantics and its external form resulted from incorrect practices of shape formation. Consideration of strategies and tactics of configuration of forms is based on comparison of two principles of shape formation - intuitive and discursive. The aim of the authors is to identify the reasons and structural specificity of intuitive and discursive practices of shape formation in design and to show the priority of the discursive approach. Attention of the authors is focused on the differences of search algorithms and results of shaping which are characteristic for the principles under consideration. The arguments cited in the article determine the discursive strategy of form configuration as the most correct and efficient in terms of design engineering. In the process of analyzing the basic algorithms of shape formation, of topical importance is the concept of legitimacy of form as a definition of the most appropriate process and a results of the project research. The article gives the interpretation of legitimacy in terms of the project practices and design - education.