These recommendations place the user at the center of the design. The role of the
designer is to facilitate the task for the user and to make sure that the user is able to make use of
the product as intended and with a minimum effort to learn how to use it. Norman noted that the
long cumbersome, unintelligible manuals that accompany products are not user-centered. He
suggests that the products should be accompanied by a small pamphlet that can be read very
quickly and draws on the user’s knowledge of the world.