If you’re in a lawsuit involving a personal injury, one of the things that may happen is you deal with expert witnesses. Expert witnesses put evidence in front of a jury to show things that the average person may not understand or may not have the expertise to understand. An expert witness could be hired on a variety of different topics to come in and explain to the jurors how a particular thing happened, how it should have happened, or how it works. It’s expertise beyond what a normal juror would have, so they are used to provide additional information to the jury and to the court.