The differences between law and equity are too technical to be explained here; even lawyers sometimes fail to understand them thoroughly.[146] Cases in equity often result in the issue of injunctions and the issue of these injunctions in labor disputes has given rise to much complaint. (See pp. 407-408.) Both equity and law are usually administered by the same courts.[147] JUDICIAL PROCEDURE =The Jury System.=—When a legal dispute arises between individuals or corporations, or when some offence is charged against a person, there are usually two questions to be decided. The first question is: What are the facts? What actually took place? The second question is: What does the law provide with reference to these facts? If you charge someone with having done you a wrong, it is not enough to prove your charge; you must also convince the court that common law, or statutory law, or equity gives you the right to redress. The first question in most important cases, both criminal and civil, is decided by a jury; the second question by a judge. [Sidenote: How the grand jury is chosen.] =The Grand Jury.=—There are two kinds of juries, both of which are selected in much the same way, but their functions are quite different. The first is called the grand jury. It is a body of men, varying from seven to twenty-three in number, chosen by lot from among the qualified voters of the county or district, and charged with the duty of investigating whether crimes have been committed. Evidence is presented to it by the prosecuting attorney, or the grand jury may make investigations on its own behalf. [Sidenote: Its work.] It conducts an investigation, not a trial. If it decides by a majority vote that there are reasonable grounds for placing any person on trial, it submits to the court a true bill or indictment. If it believes that any conditions within the county or district are wrong and ought to be remedied, it submits to the court a statement of these conditions, which is called a presentment. When a person is indicted by a grand jury, this does not mean that he has been proved guilty but merely that, in the grand jury’s opinion, he ought to be placed on trial. The grand jury does not hear the accused person’s side of the case. Its purpose is to protect individuals from being put to the inconvenience and humiliation of a public trial unless there are reasonable grounds for doing this.[148] [Sidenote: How the trial jury is chosen.]