A time to build and a time to repair An Article by Elizabeth M. Renieris www.cigionline.org There is a time to build and a time to repair. Repairing what is broken is difficult and important work that requires contextualizing technology and working within creative constraints…If we just keep building without repairing what exists or applying lessons learned along the way, we will continue to spin our wheels as the same problems accumulate and amplify. In this way, our technology may evolve, but our relationship to it (and to each other) can only degrade. Builder Brain repairbuildingtechnology
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