The Treasury Bench is not so omniscient as it appears when answering questions in the House. After notice of a question has been given, the materials for a reply are prepared, and often the answer itself is drawn up, by some permanent official in the department. Sometimes the minister merely reads the answer as it has been placed in his hands, but more commonly while keeping the substance, he puts it into words of his own that he thinks better suited to the temper of the House. The labour of working up the answers to innumerable questions on every conceivable subject, and of every degree of importance and triviality, is in the aggregate very great, and places a heavy burden upon the permanent officials during the session of Parliament. But no satisfactory method of limiting the privilege has yet been devised, and although abused, it has the effect of keeping the administration up to the mark. The system affords an opportunity for constant public criticism, and while it gives the permanent officials some control over the minister, it is, on the other hand, a most effective means of preventing the growth of a bureaucratic spirit. [Sidenote: Evils where a Minister is Inactive.] If the permanent officials can restrain a minister from interfering overmuch, there is no similar means of preventing him from neglecting his duties. Yet in that case the service suffers. It is apt to become numbed and bureaucratic. Permanent officials tend to follow precedent, and, indeed, the force of precedent furnishes the basis of their power, but the tendency to be too rigid in their rules is the curse of all their tribe. They shrink from innovation, rarely making a new precedent themselves. This is particularly true in the lesser offices, giving rise, at times, to complaint; and the political chief has to insist upon the need of making exceptions in hard cases, without allowing the hard cases themselves to make bad law. The surest remedy for an excess of routine is a parliamentary head who is interested in the department, and with him a permanent under-secretary of large calibre and wide experience in affairs. [Sidenote: Influence of Permanent Officials not Increasing.]