Earle Brown and I spent several months splicing magnetic tape together. We sat on opposite sides of the same table. Each of us had a pattern of the splicing to be done, the measurements to be made, etc. Since we were working on tapes that were later to be synchronized, we checked our measurements every now and then against each other. We invariably discovered errors in each other’s measurements. At first each of us thought the other was being careless. When the whole situation became somewhat exasperating, we took a single ruler and a single tape and each one marked where he thought an inch was. The two marks were at different points. It turned out that Earle Brown closed one eye when he made his measurements, whereas I kept both eyes open. We then tried closing one of my eyes, and later opening both of his. There still was disagreement as to the length of an inch. Finally we decided that one person should do all the final synchronizing splices. But then errors crept in due to changes in weather. In spite of these obstacles, we went on doing what we were doing for about five more months, twelve hours a day, until the work was finished. john cage