Check out Augustine's laws: http://en.wikipedia.org/wiki/Augustines_laws http://en.wikipedia.org/wiki/Augustines_laws . I believe he said software was a boon a

Check out Augustine's laws: http://en.wikipedia.org/wiki/Augustines_laws http://en.wikipedia.org/wiki/Augustines_laws . I believe he said software was a boon as all other ways to add expense to an aircraft eventually are limited by weight.