"Tim" ... the internet is about as reliable in learning about the law as it is in learning about medicine.  Your "quote" from a dictionary is wrong on its face, because no one decides "guilt" in criminal proceedings; instead (and as I elaborated on), a jury is deciding a number of issues.  But in many different proceedings the questions are not necessarily focused on the party brought to court.  For example, a criminal defendant may admit having killed someone, but if s/he raises "self defense," the trial may well turn on a detailed evaluation of the victim's behavior.  See what happens when you actually understand and are involved in the legal processes, instead of just trolling?