David Parnas Quotes

• Copy and paste is a design error.

  David Parnas

  Funny Inspirational, Errors, Design

  54 Copiar cita

• Un mal programador puede crear fácilmente dos nuevos empleos al año.

  David Parnas

  Trabajo, Años, Dos

  23 Copiar cita

• Artificial intelligence has the same relation to intelligence as artificial flowers have to flowers.

  David Parnas

  Flower, Relation, Artificial Intelligence

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• I have found that the reason a lot of people are interested in artificial intelligence is the same reason a lot of people are interested in artificial limbs: they are missing one.

  David Parnas

  People, Missing, Reason

  7 Copiar cita

• When someone builds a bridge, he uses engineers who have been certified as knowing what they are doing. Yet when someone builds you a software program, he has no similar certification, even though your safety may be just as dependent upon that software working as it is upon the bridge supporting your weight.

  David Parnas

  Bridges, Knowing, Safety

  14 Copiar cita

• Complexity is not a goal. I don't want to be remembered as an engineer of complex systems.

  David Parnas

  Goal, Want, Complexity

  7 Copiar cita

• As a rule, software systems do not work well until they have been used, and have failed repeatedly, in real applications.

  David Parnas

  Real, Learning, Insomnia

  15 Copiar cita

• Find the simplest model that is not a lie is the key to better software design.

  David Parnas

  Lying, Keys, Design

  9 Copiar cita

• We must not forget that the wheel is reinvented so often because it is a very good idea; I've learned to worry more about the soundness of ideas that were invented only once.

  David Parnas

  Ideas, Worry, Wheels

  9 Copiar cita

• Requirements in mathematical language are no use unless they are easier to read than the code.

  David Parnas

  Use, Requirements, Language

  11 Copiar cita

• Whenever anyone says, 'theoretically', they really mean, 'not really'.

  David Parnas

  Mean Girls, Humorous, Science

  9 Copiar cita

• Muchos pasan el tiempo reprendiendo a los profesionales por no aplicar su método. Todos necesitamos difundir nuestras ideas, pero deberíamos dedicar la mayor parte de nuestro tiempo a aplicar y mejorar nuestros métodos, no a venderlos. La mejor manera de vender una trampa para ratones es mostrar algunos ratones atrapados.

  David Parnas

  Ideas, Way, Needs

  7 Copiar cita

• There are no standards for computer programmers and no group to certify them.

  David Parnas

  Groups, Computer, Standards

  7 Copiar cita

• My judgment is that research in 'Star Wars' is going to fail, and I believe this so strongly that I'm willing to stake my professional reputation on this. I don't believe anybody is going to build this thing.

  David Parnas

  Stars, War, Believe

  7 Copiar cita

• En el caso de los programas informáticos, es habitual descubrir que tienen "fallos" importantes y que no funcionan de forma fiable para algunos usuarios... El público no especializado, que sólo conoce unos pocos incidentes de fallos de software, puede considerarlos excepciones causadas por programadores excepcionalmente ineptos. Los profesionales del software sabemos que ni los programadores más competentes del mundo pueden evitar estos problemas.

  David Parnas

  World, May, Bugs

  8 Copiar cita

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