You have been asked to give a presentation to a group of managers at an oil exploration company to gain access to undertake your research. As part of the presentation you outline your methodology, which includes piloting the questionnaire. In the ensuing question and answer session, one of the managers asks you to justify the need for a pilot study, arguing that ‘given the time constraints the pilot can be left out’. List the arguments that you would use to convince him that pilot testing is essential to your methodology.