The Blue Cliff Record A Book by Yuanwu Keqin, Thomas Cleary & J.C. Cleary www.shambhala.com Mountains are mountainsNo door at which to knockThe miraculous bones of the ancientsWhat did you see when you were there?I have pacified your mind+2 More zeneuphony
Up and Down the Ladder of Abstraction An Essay by Bret Victor worrydream.com The most powerful way to gain insight into a system is by moving between levels of abstraction. Many designers do this instinctively. But it's easy to get stuck on the ground, experiencing concrete systems with no higher-level view. It's also easy to get stuck in the clouds, working entirely with abstract equations or aggregate statistics. This interactive essay presents the ladder of abstraction, a technique for thinking explicitly about these levels, so a designer can move among them consciously and confidently. From a roving viewpoint abstractionunderstandinginteraction