Jack Dorsey days, Dorsey worked occasionally as a fashion model. By age fourteen, Dorsey had become interested in dispatch routing. Some of the open-source software he created in the area of dispatch logistics is still used by many taxi cab companies. Dorsey attended the University of Missouri–Rolla for two-plus years (1995–1997) before transferring to New York University, but he dropped out in 1999, one semester short of graduating. He first came up with the idea that he developed as Twitter while studying at New York University. While working on dispatching as a programmer, Dorsey moved to California. In 2000, Dorsey started his
Ken Dorsey Dorsey was sent into the game against the Indianapolis Colts after Derek Anderson was injured; he completed two passes, one incomplete, the other an interception. On December 2, Derek Anderson was put on injured reserve ending his season. Dorsey was named the starter for the remainder of the 2008 season. However, Dorsey was injured during the December 21 game that was against the Bengals. Fourth string quarterback Bruce Gradkowski started in place of Dorsey in week 17 against the Pittsburgh Steelers. Dorsey was released by the Browns on February 9, 2009. For a brief time, Dorsey was the quarterbacks coach