People who are serious about user interface design, test the accessibility of their systems while on 20 grams of psilocybe cubensis. Researchers at Xerox PARC & in DARPA programs extensively experimented with Psychedelic UX in the 20st century, but where barred from publishing results.
Was Douglas Engelbart's 1962 visionary paper "Augmenting Human Intellect: A Conceptual Framework" only partially released publicly? What was the classified research about?