Psychedelic drugs (or non-lethal chemical weapons) could be used in interrogations / warfare instead of torture / weapons
Eyewitness identification, custodial interrogation / recording, judge bias, access to post-conviction DNA testing, evidence preservation, public defense funding / quality, plea bargains, and forensic science could improve to prevent wrongful convictions
Interrogation approaches could be ethical, legal, and effective
Different interrogation tactics could be used to prevent false confessions