In 1968, a scientist in the United States, Dr. Spencer Silver, was attempting to develop a super-strong adhesive. Instead he accidentally created a “low-tack”, reusable, pressure-sensitive adhesive. For five years, Silver promoted his “solution without a problem” within both informally and through seminars but failed to gain acceptance. In 1974 a colleague who had attended one of his seminars, Art Fry, came up with the idea of using the adhesive to anchor his bookmark in his hymnbook. As a result of this an era defining product was created what was it?