This book is also available in German. “The Cosmos of Design” is a journey through the characteristic features of design thought processes that usually occur unconsciously. With the help of simple examples, designing is explored step by step: moreCreative experimentation and speculative thinking are highlighted in addition to cognition-oriented tests, iterative loops and abductive conclusions. The result of this study is a coherent pattern of thought, an enlightening philosophy of design. As a resource for students and practitioners, “The Cosmos of Design” is intended to broad-en the understanding of design and to provide theoretical foundation and practical inspiration.