Desmond Tutu was a qualified teacher before becoming a priest. elaborate
Marie Curie's research notebooks are still radioactive and require special handling. elaborate
Alexander Graham Bell never had a telephone in his study. elaborate
Bill Gates's first programming job was creating a payroll program for his high school. elaborate
Alan Turing helped design a sophisticated electromechanical machine to break the German Enigma code, but he also designed a chess-playing machine using only relays and other basic components, decades before digital computers were widely available. elaborate