9.1.2 Limits

Second, decide the limits and the variations to the user trip or trips that you are going to take. It is usually a good idea to extend the trip into activities that both precede and succeed the immediate use of the product you are investigating since this may lead you into devising an improved, more integrated overall solution. Similarly, variations on a basic trip – different times of day, different weather conditions, different requirements – will probably bring to light a wider range of problems than would a single, random trip.