“…I had to think for a long time about how unusable systems could be unusable and yet be successful. Unusable systems that are successful violate what is existing good practice in what we teach in my college, what is in our textbooks (Oury & Ritter, 2021;Ritter et al, 2014), my colleagues' textbooks (Carroll, 2000;Rossen & Carroll, 2001), the National Research Council report on system design that I helped write (Pew & Mavor, 2007), and is in nearly all human-computer interaction (HCI) and human factors textbooks (e.g., Dix et al, 1998;Lee et al, 2017;Lewis & Reiman, 1998;Norman, 2013).…”