What is a fact and what is an opinion differ greatly. Evidence can be a help in any situation. A fact is an irrefutable statement, such as, "check this link to local court services for history of a case he won" or "the link is to a paper of his a university used for law students" or "the website removed the photographs thanks to him as he proved to them beyond doubt the individual owned the copyright". A fact cannot be disputed, as it refers to that which has already been proven. An opinion, on the other hand, is any statement that has been made, based on "feelings", "likes or dislikes", or "one's preferences", so therefore, opinions can vary widely and can be disputed and are not irrefutable. That "he said he was accomplished so I believe him" - is not a fact, but an opinion.