The Usefulness of Useless Knowledge An Essay by Abraham Flexner press.princeton.edu A curious factRoaming and capriciousUseFreedomThe Institute for Advanced Study+2 More The research agendaThe technology shelf knowledgelearningdiscoveryprogressexperiments
Truchet Tiles Truchet tiles are square tiles decorated with patterns that are not rotationally symmetric. When placed in a square tiling of the plane, they can form varied patterns, and the orientation of each tile can be used to visualize information associated with the tile's position within the tiling. Wikipedia en.wikipedia.org The Tiling Patterns of Sebastien Truchet and the Topology of Structural HierarchyWang tiles graphicsart