Poor investigative work leads to bad conclusions. Maybe the answer is a combination of re-forming law enforcement departments, adversarial processes for attach

Poor investigative work leads to bad conclusions. Maybe the answer is a combination of re-forming law enforcement departments, adversarial processes for attaching warrants to suspects (with a judge and defender, etc), and to stop blindly trusting processes that at best reduce the size of a probable suspect pool (of everyone) as being capable of positively identifying a single individual.