IMHO, the innocence project has cost at least one innocent life in Wisconsin. They got a monster out of prison so he could lure a young woman to her death.
It was Scalia’s view that if, as an attorney, you found your client had committed a crime that somebody else had been imprisoned for, it was OK to keep your mouth shut “because that person probably was guilty of something else.”
At the cost of risks like this, our justice system strives for the closest thing to cosmic truth that it can reach.