The Cycle of Goodness An Idea by Tadao Yoshida ykknorthamerica.com The CYCLE OF GOODNESS® is the corporate philosophy established by YKK’s founder, Tadao Yoshida, who believed that “no one prospers without rendering benefit to others.” It expresses the basic belief of the YKK Group. Tadao Yoshida firmly believed that business belongs to society. As an important member of society, a company survives through coexistence. When the benefits are shared, the value of the company’s existence will be recognized by society. When pursuing his business, Mr. Yoshida was most concerned with that aspect and would find a path leading to mutual prosperity. He believed that using ingenuity and inventiveness in business activities and constantly creating new value would lead to the success of clients and business partners and make it possible to contribute to society. This type of reasoning is referred to as the CYCLE OF GOODNESS® and has always served as the foundation of our business activities. Why YKK zippers are the brown M&Ms of product design goodnesssocietybusiness
Wang tiles Wang tiles (Hao Wang, 1961) are a class of formal systems. They are modelled visually by square tiles with a color on each side. A set of such tiles is selected, and copies of the tiles are arranged side by side with matching colors, without rotating or reflecting them. The basic question about a set of Wang tiles is whether it can tile the plane or not, i.e., whether an entire infinite plane can be filled this way. The next question is whether this can be done in a periodic pattern. In 1966, Wang's student Robert Berger solved the problem in the negative. He proved that no algorithm for the problem can exist, by showing how to translate any Turing machine into a set of Wang tiles that tiles the plane if and only if the Turing machine does not halt. The undecidability of the halting problem then implies the undecidability of Wang's tiling problem. Wikipedia en.wikipedia.org Truchet TilesThe Tiling Patterns of Sebastien Truchet and the Topology of Structural Hierarchy mathalgorithms