This list is just a random assortment of near 3 hour movies . WOWT is 1 min under . This is kind of a shitty list tbh , in surprised the author has heard of Andrei Rubelev . <| sep |> A socalled Norman Door has design elements that give you the wrong usability signals to the point that special signage is needed to clarify how they work . Without signs , a user is left guessing about whether to push or pull , creating needless frustration . There is no reason for these backward designs to persist , since various working solutions to the problem already exist , and yet these horrible doors are still all around us in the built environment . This peculiar design problem is part of what motivated Don Norman hence Norman Door to write his nowclassic book The Design of Everyday Things . Similar issues can be found in other everyday objects as well , from light switches and sink handles , which frequently feature counterintuitive functions or modes of operation . An advocate of usercentric or peopleoriented design , Norman offers insights that bring together aspects of usability , engineering , and cognitive science . His book provides an enlightening look into the intersection of these disciplines and design , informative and educational for users and designers alike . source d o o r s d o n t k n o w w hetherpushpullblamedesign