Gershenfeld v. Kahn
In Fab, Neil Gershenfeld discusses a course he instructed at MIT about personal fabrication. In this course, pupils created inventions that they had always wanted, but each device was usually only useful to its creator. For instance, one student wanted to be able to scream whenever she wanted, so created a scream box. Gershenfeld says that personal fabrication would be useful because it creates the ability to make things specifically for oneself, rather than society as a whole.
In Silence and Light, Louis Kahn states that architecture is spiritual and creates "spaces which serve the institutions of Man." These things serve society as a whole, rather than the individual. Kahn argues that things we design become part of our spirit. Kahn agrees with Gershenfeld in that objects should be designed to serve each individual. But in doing so completely, society would not be productively advancing its knowledge of technology because everything would be too personalized.