Rule 5.702 Testimony by expert witnesses

If someone has special knowledge, training, or work experience in a certain area, they may be allowed to testify as an expert witness in court. This means they can share their opinion about the case, not just facts they personally saw or experienced like a regular witness would.

The judge decides if a person qualifies as an expert. This can come from formal education, but it can also come from years of hands on experience, job training, or skills the person built up over time. A doctor, engineer, mechanic, or accountant could all potentially qualify as an expert in their field.

The main test is whether the expert's knowledge will actually help the judge or jury understand something complicated or decide a key question in the case. If the topic is something regular people already understand well, expert testimony may not be needed or allowed. But when a case involves technical or specialized subjects, like medical injuries, financial records, or how a machine works, an expert can explain things in a way that helps the judge or jury make sense of the evidence.

This rule matters because expert testimony can carry a lot of weight in a trial. Jurors often trust expert opinions, so courts want to make sure the person testifying truly has the background needed to speak on that subject.