Epistemology applied to conclusions of expert reports

The two main European judicial systems inherit a wide and deep culture related to evidence in criminal proceedings and each of them has coined their own terminology but there are other two more abstract levels such as logical and epistemological, where we can find solid arguments by which terms used at legal level on conclusions of forensic reports could be accurate and consistent for all users of an intended EU guideline. An effort has been made to elucidate the following terms: truth, certainty, uncertainty, opinion, conjecture, probability, evidence, belief, credibility, determinism, indeterminacy, cause, principle, condition, and occasion.