People who experience specific reading difficulty are said to suffer from dyslexia. People are diagnosed as dyslexic when their reading problems cannot be explained by lack of intellectual ability, or by inadequate instruction, or by sensory problems such as poor eyesight. Because reading is a complex mental process, dyslexia has many potential causes. Albert Einstein Thomas Edison Alexander Graham Bell Michael Faraday Walt Disney Henry Ford Jay Leno Ted Turner AOL Time Warner Nelson Rockefeller FW Woolworth John Chambers Cisco Charles Schwab brokerage Guy Hands banking Nicholas Negroponte founder of the Media Lab at the Massachusetts Institute of Technology Winston Churchill Woodrow Wilson George Washington Thomas Jefferson John F. Kennedy Hans Christian Anderson Steve Redgrave Mike Norris Head of Computacenter Richard Branson Jamie Oliver Duncan Goodhew Jackie Stewart Michael Heseltine Lynda La Plante Anita Roddick Founder of the Body Shop Tom Cruise Cher Whoopi Goldberg It has also been suggested that Leonardo da Vinci and Picasso were dyslexics