Human-Error Processor

There is a certain ambivalence, then, in the teacher’s sentiments. He yearns for more independence, greater resources, and just possibly, more control over key resources. But he accepts the hegemony of the school system on which he is economically and functionally dependent. He cannot ensure that the imperatives of teaching, as he defines them, will be honored, but he chafes when they are not. He is poised between the impulse to control his work life and the necessity to accept its vagaries; perhaps he holds back partly because he is at heart uncertain that he can produce predictable results.                                                                        
                                                                      ————– Dan Lortie. 1975. Schoolteacher: A sociological study.

今天在Henry Levin关于production function讨论的文章中看到的，觉得甚是传神。