At this point a word of caution is necessary. The application of the principle of homogeneity has its pitfalls. Every highly trained technician, particularly in the learned professions, has a profound sense of omniscience and a great desire for complete independence in the service of society. When employed by government he knows exactly what the people need better than they do themselves, and he knows how to render this service. He tends to be utterly oblivious of all other needs, because, after all, is not his particular technology the road to salvation? Any restraint applied to him is “limitation of freedom,” and any criticism “springs from ignorance and jealousy.” Every budget increase he secures is “in the public interest,” while every increase secured elsewhere is”a sheer waste.” His efforts and maneuvers to expand are “public education” and “civic organization,” while similar efforts by others are “propaganda” and “politics.”