To begin with, it is necessary to clarify who an expert witness is. Thus, it is a person whose opinion is accepted as expert by the judge due to their educational expertise or some certification or training which they have received in a particular field.
Expert witnesses are very important when it comes to deciding whether the defendant is guilty or not. What is more, such witnesses may either confirm or deny that the presented evidence shows that the defendant is guilty. That is the reason why choosing an expert witness is of vital importance as it may help save somebody’s life.
What should also be mentioned is that expert witnesses are usually invited in lots of controversial cases due to the fact that the judge and the jury need to be 100% sure that certain evidence can be trusted. So, inviting a person who has vast knowledge and profound experience in that area is the best solution. In addition, expert witnesses are quite invited to testify in more than one case.