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
Jack Abbott (The Young and the Restless) the body, a setup by Victor, and Jack went to rehab. Phyllis helped him get through withdrawal. Nikki told Jack about her multiple sclerosis diagnosis and he encouraged her to share the news with Victor. Later, Congressman Wheeler put a hit on Victor, so Jack and Victor worked together to prove Wheeler was involved in the death of Belinda Rogan. Jack and Phyllis moved in together. Phyllis revealed to Jack that he was Summer's real dad and all three grew closer. After a fall at the MS Gala, Phyllis needed brain surgery, but was never able to tell Jack that