Fidelity of your approach An experiment is usually a model"of the"real thing It may be too complex or expensive to test the real thing It usually will be difficult to have control over the variables in a real operational environment e.g. a part task simulator will be used to test a cockpit display instead of modifying a real cockpit The fidelity"*of your(model)experiment needs to be assessed as part of the design process Lack of fidelity is one source of errors a good way to consider these errors in the design stage is to write them down assess their importance and consider mitigation strategⅰes * Fidelity: Exact correspondence with fact or with a given quality conditionoreventaccuracyhttp://dictionary.reference.com/Fidelity of Your Approach • An experiment is usually a “model” of the “real thing”. – It may be too complex or expensive to test the real thing – It usually will be difficult to have control over the variables in a real operational environment – e.g. a part task simulator will be used to test a cockpit display instead of modifying a real cockpit. • The “fidelity”* of your (model) experiment needs to be assessed as part of the design process. • Lack of fidelity is one source of errors. • A good way to consider these errors in the design stage is to write them down, assess their importance, and consider mitigation strategies. *Fidelity: Exact correspondence with fact or with a given quality, condition, or event; accuracy. http://dictionary.reference.com/