In the computer field, the moment of truth is a running program; all else is prophecy.
Herbert SimonHuman knowledge has been changing from the word go and people in certain respects behave more rationally than they did when they didn't have it. They spend less time doing rain dances and more time seeding clouds.
Herbert SimonMathematics is a language. We want scientists to be able to read it, speak it, and write it. But we are are not training them to be grammarians.
Herbert Simon