The appointment of a special counsel is always a tragedy, in the sense that going under the surgeon’s knife is always a tragedy. Like the human body, the government should function smoothly without the need to slice and cut. The Justice Department brings in an outsider only when the public does not trust the executive branch to investigate itself. Even when, as now, there may be good reason for the mistrust, the moment is hardly one for celebration. Even when we know surgery is necessary, we do not throw parties.