In an adversary system of adjudication, the plaintiff files his claim, serves it on the defendant. The defendant replies, admitting or denying the claims and then in the end, include his own facts of the case. Thereafter the claimant pleads facts and also replies. The trial begins. In the pleading filed by parties, there may be facts which are admitted which need no further proof. There are those facts which are denied which the party making the assertion must prove with cogent facts.