The man is also one of the authors of AutoCAD, a mechanical and civil engineering drafting software, which is globally popular (or hated, depending on who you a

The man is also one of the authors of AutoCAD, a mechanical and civil engineering drafting software, which is globally popular (or hated, depending on who you ask!). I personally love the keyboard/commandline integration of AutoCAD, makes for an efficient and 'tactile' workflow (compared to the heavy dependence on mouse for other CAD software out there).