Sleeping judges. Judges are supposed to be impartial referees intent on ensuring fair trials. They should exclude confessions that are inconsistent with the physical evidence and obtained by questionable means; exclude the testimony of career felons with dubious motives; require prosecutors to produce exculpatory evidence; and question the credentials and testimony of all experts outside the presence of the jury. Unfortunately, judges do not always do what they should. The reasons are many and varied, but the fact that many judges are elected doesn't help. They are conscious of their upcoming re-election campaigns and how the decisions they make might affect the results. Of those judges who are appointed rather than elected, the majority are former prosecutors.