Some of the most successful products and businesses have resulted from pure luck or accident. Often they were developed originally for other purposes. Examples include Post-it Notes, Viagra, Kellogg’s Cornflakes, Coca-Cola, Vaseline, Teflon, Super Glue, Velcro, Play-Doh and chewing gum. Each is phenomenally successful, of course, yet created by luck or for other purposes rather than by design. Such examples are rare, of course.