This summary is not the rule. The rule text controls.
If someone has special knowledge or training in a subject, like a doctor, engineer, or accountant, they can be allowed to give their opinion in court about that subject. This is different from regular witnesses, who can usually only talk about what they personally saw or heard. Expert witnesses can explain technical information and share conclusions based on their expertise.
The main requirement is that the expert's knowledge actually needs to help the judge or jury understand something in the case. Courts will look at the expert's background, like their education, work experience, or training, to decide if they are qualified to speak on the topic. The goal is to make sure the jury gets useful, reliable information from someone who truly knows the subject, rather than just guesses or personal opinions from someone without real expertise.
This rule matters because expert testimony can carry a lot of weight with a jury. If you're involved in a case that has technical or scientific questions, like a medical malpractice claim or a case involving faulty equipment, an expert witness might be necessary to explain what happened and why it matters.
