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Probably the most well developed of his scientific investigations is his book on colour theory which studied many aspects of the formation of colours. Proskauer in this book reviews and also extends some of Goethe's work on colour as well as allowing the reader to experience the phenomena first hand through a small prism attached to the book with special cards to serve as "light/dark" sources.
The book starts with an introduction to Goethe's work which contradicts Newton's theories such as the notion that ordinary "white" light is constructed from a combination of the colours and that the prism separates the colours already present in it. Proskauer demonstrates that the spectrum observed by the prism is in fact a construction which arises due to two distinct spectra overlapping and that a spectrum is noticed only in the presence of a light/dark boundary. Further fascinating aspects are disclosed and provide a strong argument for a scientific approach akin to Goethe's. The colour phenomenon is observed without abstraction used to construct a colour theory.
These are the good aspects of the work, however the writing is at times speculative and goes counter to Goethe's original approach to "never leaving the phenomenon". Somehow it never quite convinces but nonetheless it certainly wakes up the mind from the mechanistic slumber of ordinary science. Perhaps a deeper approach would remove some of these problems.
A good book with great potential.

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Other chapters refer to business innovation, with thoughts on how companies can sustain creativity. Some of these ideas, although business related, and sometimes German-centric (the book was translated from German) reveal great insight into what new is and what can be done to develop new ideas. For example, an organization has the potential for more creativity by allowing more disorder in the chapter "The Virtues of Corporate Disorder."
Some of the chapters in this book I want to read again and others I found uninteresting or too abstract. Overall, I thought the authors have pulled together a compelling collection of ideas.