Scientists have long recognized that witness confidence tends to get inflated over time, thanks partly to reinforcement and encouragement by investigators and lawyers. So when a witness finally takes the stand, often months after the crime, they often sound far more sure of their pick than they were the first time. Even when a lineup is done blind, “lots of things can happen before a lineup procedure even occurs that would encourage a witness to make the identification,” Brandon Garrett, a law professor at the University of Virginia, told BuzzFeed News. A cop could tell the witness...