Universal Principles of Design is an exciting overview of the products which in our opinion makes it attractive. It is a simple list of design principles and their effects. Many illustrations help you understand these issues and rain to raise to their own perceptions of products. In sales of well-designed products, the book helps to develop ideas to explain design better and to make the customer experience better. It is thus possible with other sales step vocabulary as numbers, dates, and figures show the products more valuable to the customer. I use the book as a resource therefore in presentation training for sophisticated design products, and always goes down well.