Witness testifying to both facts and opinions is an individual who is called to give testimony in court regarding both factual information and opinions. This type of witness is often an expert in a particular field, such as a doctor, engineer, or scientist. This witness may be called upon to explain the scientific, technical, or medical facts of a case, as well as any opinions they may have about the case. In addition, this witness may offer their opinion on the facts of the case, such as whether they believe the defendant is guilty. There are two main types of witness testifying to both facts and opinions. The first type is a fact witness, which is a witness who has seen or heard something personally and can provide firsthand information about the case. The second type is an opinion witness, which is a witness who is called to provide an opinion on the case based on their expertise or experience. Examples of witnesses testifying to both facts and opinions include medical experts, engineers, scientists, and industry professionals.