Deliberations cannot begin unless everyone in the room is present, and they cannot continue if someone leaves the room. During the trial, jurors are mostly free to come and go as they like, but once the case is given to the jury (after closing arguments and the judge's instructions), the jury is kept together under the supervision of a court official. They must reach a verdict if the trial is going to be done properly and justly. The only time a juror can leave the courtroom without permission from the court officer or the judge is when there is a medical emergency. In that case, the juror should notify a court officer immediately so that an appropriate response can be made. A person who is not a juror shouldn't try to influence them or give advice about the case. Such actions may be considered contempt of court. Judges have the power to punish such actions by imposing fines or even jail time. People sometimes ask themselves whether they can trust a jury's verdict. All courts rely on juries to make decisions in cases where there is controversy over what action should be taken. Juries decide cases where there is disagreement about what happened or who was at fault. Because of this, it is very difficult to predict how a jury will decide. Even if you think you know how a jury would rule, you cannot guarantee what decision they will make. A jury's verdict should be accepted only after considering all evidence admitted during trial.