The realm of technology is the process of turning an invention to practical use. Engineers and technicians spend their time applying new concepts to problems. The process has made the fortune of many entrepreneur. In 1988 Sidhu, a university graduate in systems and control engineering and immigrant to the United States, started his consulting business, called i2 Technologies. The venture is based on “constraint propagation,” which applies mathematical formulae that define limits which, in turn, determine how not to perform in a particular activity or process. It finds application in manufacturing and process operations. Bethlehem Steel, Caterpillar Corporation and 3M pay Sidhu ‘ s company over $ 15 million apiece for a program using computers and mathematical algorithms to streamline manufacturing Today i2 is worth over $1 billion.