http://ux.stackexchange.com/questions/42026/could-user-tests-with-impaired-drugged-tired-people-lead-to-better-interface http://ux.stackexchange.com/questions/4

http://ux.stackexchange.com/questions/42026/could-user-tests-with-impaired-drugged-tired-people-lead-to-better-interface http://ux.stackexchange.com/questions/42026/could-user-tests...