Tell me, gentle flowers Tell me, gentle flowers, teardrops of the stars, standing in the garden, nodding your heads to the bees as they sing of the dews and the sunbeams, are you aware of the fearful doom that awaits vou? Dream on, sway and frolic while you may in the gentle breezes of summer. Tomorrow a ruthless hand will close around your throats. Okakura Kakuzō, The Book of Tea flowers
The man of the pot In the West the display of flowers seems to be a part of the pageantry of wealth—the fancy of a moment. Whither do they all go, these flowers, when the revelry is over? Nothing is more pitiful than to see a faded flower remorselessly flung upon a dung heap. ...Much may be said in favor of him who cultivates plants. The man of the pot is far more humane than he of the scissors. ...Anyone acquainted with the ways of our tea and Flower Masters must have noticed the religious veneration with which they regard flowers. They do not cull at random, but carefully select each branch or spray with an eye to the artistic composition they have in mind. They would be ashamed should they chance to cut more than were absolutely necessary. It may be remarked in this connection that they always associate the leaves, if there be any, with the flower, for their object is to present the whole beauty of plant life. In this respect, as in many others, their method differs from that pursued in Western countries. Here we are apt to see only the flower stems, heads as it were, without body, stuck promiscuously into a vase. Okakura Kakuzō, The Book of Tea flowersgardens
If removed from the place for which it was intended A flower arrangement by a tea master loses its significance if removed from the place for which it was originally intended, for its lines and proportions have been specially worked out with a view to its surroundings. Okakura Kakuzō, The Book of Tea Conditional art flowers
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