"... a curious investigator that's trying to maximize their own knowledge of the truth."
Do we actually have anything like this in the 'justice' system? Lawyers are on sides. Police only investigate to prove guilt, not innocence (most of the time). Judges are basically referees. Juries don't get to investigate, only view what the court allows them to (and society in general has a bias against defendants). In my experience, nobody is interested in the truth.