'Design simple and robust systems...' and 'never proceed without confidence in your understanding...'. When I was a freshman, I would have said that. Then I en

'Design simple and robust systems...' and 'never proceed without confidence in your understanding...'. When I was a freshman, I would have said that. Then I entered the professional world. Complex problems are solved using complex solutions. Complete understanding is non-existing. Robustness is a relative term.