Which half? One day when I was a junior medical student, a very important Boston surgeon visited the school and delivered a great treatise on a large number of patients who had undergone successful operations for vascular reconstruction. At the end of the lecture, a young student at the back of the room timidly asked, "Do you have any controls?" Well the great surgeon drew himself up to his full height, hit the desk, and said, "Do you mean did I not operate on half of the patients?" The hall grew very quiet then. The voice at the back of the room hesitantly replied, "Yes, that's what I had in mind." Then the visitor's fist really came down as he thundered, "Of course not. That would have doomed half of them to their death!" God, it was quiet then, and one could scarcely hear the small voice ask, "Which half?" E.E. Peacock Jr., Seeing With Fresh Eyes science
Reversibility of perspectives Irwin's thinking was informed by the writings of Alfred Schutz, a follower of Husserl, ...[who] had noted that typification was at the basis of the assumption of the reversibility of perspectives, which was a condition for the possibility of intersubjective experience and the notion of a shared, commonly experienced world. It is also the first step in overcoming the specificity of the individual in favor of knowledge about groups. What is gained by this procedure is an understanding of demographics, but the cost of this understanding is a lack of emphasis on differences between individuals and their unique subjective experiences. Matthew Simms, Robert Irwin: A Conditional Art You and your user are one