ABSTRACT
When designers design consumer products, they have to make many choices. One of these is the assessment of the target user group. Designing for literally everyone, or 100% or the target users, may result in a very expensive product or a product that suits nobody really well. When designing a product or a situation, the exclusion of extreme users (extreme tall, extreme slow, etc.) is therefore unavoidable. Designing products for “weak” or “strong” (tall or short, quick or slow, etc.) users is not precise enough an indication. In addition to deciding whether the weakest or the strongest users are the most relevant for specific design purposes, the designer has to determine which percentage of users within the expected population the specific design aspect will take into account.
