[marajade]

they had DNA evidence in this case, where would the mistake be? In keeping him in prison for the rest of his life rather than giving him the needle?

[Greg Weston]

There is no mistake in this case IMO. However there have been mistakes in other cases where DNA etc has set people free. These people would probably have been executed. Once they are gone you can't correct the mistake or expose the misconduct to bring them back. That's why I generally lean against capital punishment.