Hi everybody! There is one part of a sentence that confuses me, therefore I need your help. The sentence in question is: "Eso me aportaba un primer dato contradictorio con el esquema apriorístico que siempre se tiene y me había hecho también para aquel caso." The text is about an investigator that is dealing with a murder case. I don't quite understand the bolded text. Could someone explain to me what he is doing with the aprioristic method? Thank you in advance.