[Sidenote: Each Official a Reader for his Superior.] Each permanent official thus performs a double service for his immediate superior. He collects all the material that bears upon a question, presenting it in such a form that a decision can be readily and quickly made; and he acts to a certain extent as a reader, examining a mass of papers that the superior would be quite unable to go through, and making up his own mind how far they contain anything that requires his chief's attention.[185:1] This system runs throughout the department, from the junior first-class clerks to the parliamentary head, each official deciding what he will submit to his superior; in the same way that the minister himself determines what matters he will settle on his own authority, and what he had better lay before the cabinet. No doubt a subordinate in undertaking to decide a question occasionally makes a mistake for which the minister must assume the responsibility; but that is not a serious danger. The besetting sin of bureaucracy is the tendency to refer too much to a higher authority, which cannot become familiar with the facts of each case, and finds its only refuge in clinging to hard and fast rules. It is fortunate, therefore, that the growth in the machinery of central administration in England has been accompanied by greater deconcentration within the departments.[185:2] The process has not been without effect on the position of the permanent under-secretary. By relieving him of detail it has made him more free to devote his attention to general policy; and, in fact, a departmental committee reported a few years ago that he ought "to divest himself of all but the most important matters in which the application of a new principle is involved." No question, the report continued, ought to reach him until it has been threshed out by the responsible head of a division, and is ripe for decision. "The permanent secretary should be able to devote himself to such work as conferring with and advising his Parliamentary chiefs, framing or elaborating proposals for new legislation or administrative reform, considering all questions in Parliament, receiving members of Parliament, or representatives of the Public on questions of difficulty, and generally controlling and directing the conduct of the Department."[186:1] [Sidenote: Differences between the Departments.]