first , it was how to design survey sheets according to the subjects , because we had to prevent the questions from being too influential and we must make sure that every question was balanced and equitable . secondly , it was how to get information through telephone covering in the fastest and most effectively way , because the person doing the survey usually doesn ’ t have the patience to wait for long feedback . so the way we put up questions must be clear and direct and only by this means can we get accurate data .